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10212201201220 = 2257310111691787
BaseRepresentation
bin1001010010011011011010…
…0111111111111001000100
31100011021110212020011212021
42110212312213333321010
52314304042001414340
633415230453132524
72102543602654444
oct224466647777104
940137425204767
1010212201201220
113287a7438a297
12118b23962a144
135910111c7195
142743b7844124
1512a99962ce4a
hex949b69ffe44

10212201201220 has 48 divisors (see below), whose sum is σ = 21741579675648. Its totient is φ = 4028518920960.

The previous prime is 10212201201199. The next prime is 10212201201229. The reversal of 10212201201220 is 2210210221201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10212201201194 and 10212201201203.

It is not an unprimeable number, because it can be changed into a prime (10212201201229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14416167 + ... + 15107953.

It is an arithmetic number, because the mean of its divisors is an integer number (452949576576).

Almost surely, 210212201201220 is an apocalyptic number.

10212201201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212201201220 is an abundant number, since it is smaller than the sum of its proper divisors (11529378474428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10212201201220 is a wasteful number, since it uses less digits than its factorization.

10212201201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701980 (or 701978 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10212201201220 its reverse (2210210221201), we get a palindrome (12422411422421).

The spelling of 10212201201220 in words is "ten trillion, two hundred twelve billion, two hundred one million, two hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 10111 20222 40444 50555 101110 202220 691787 738103 1383574 1476206 2767148 2952412 3458935 3690515 6917870 7381030 13835740 14762060 50500451 101000902 202001804 252502255 505004510 1010009020 6994658357 13989316714 27978633428 34973291785 69946583570 139893167140 510610060061 1021220120122 2042440240244 2553050300305 5106100600610 10212201201220