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122102202020 = 2256105110101
BaseRepresentation
bin111000110110111011…
…0111011111010100100
3102200011111211112112112
41301231312323322210
54000031130431040
6132032025540152
711551543410161
oct1615566737244
9380144745475
10122102202020
1147868567667
121b7b7944658
13b68b8965a6
145ca4607068
153299805365
hex1c6ddbbea4

122102202020 has 12 divisors (see below), whose sum is σ = 256414624284. Its totient is φ = 48840880800.

The previous prime is 122102201987. The next prime is 122102202031. The reversal of 122102202020 is 20202201221.

It can be written as a sum of positive squares in 2 ways, for example, as 23837507236 + 98264694784 = 154394^2 + 313472^2 .

It is a super-3 number, since 3×1221022020203 (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122102201986 and 122102202004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3052555031 + ... + 3052555070.

It is an arithmetic number, because the mean of its divisors is an integer number (21367885357).

Almost surely, 2122102202020 is an apocalyptic number.

122102202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122102202020 is an abundant number, since it is smaller than the sum of its proper divisors (134312422264).

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

122102202020 is a wasteful number, since it uses less digits than its factorization.

122102202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105110110 (or 6105110108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 122102202020 its reverse (20202201221), we get a palindrome (142304403241).

The spelling of 122102202020 in words is "one hundred twenty-two billion, one hundred two million, two hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 6105110101 12210220202 24420440404 30525550505 61051101010 122102202020