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20200201001220 = 2235336670016687
BaseRepresentation
bin1001001011111001110011…
…10011100001100100000100
32122112010020201222002222210
410211330321303201210010
510121430002424014340
6110543502204223420
74153262545323162
oct445747163414404
978463221862883
1020200201001220
116488947935449
122322b2653ab70
13b36b4214ab36
144db9a2d02232
152506c0cb1180
hex125f39ce1904

20200201001220 has 24 divisors (see below), whose sum is σ = 56560562803584. Its totient is φ = 5386720266976.

The previous prime is 20200201001107. The next prime is 20200201001249. The reversal of 20200201001220 is 2210010200202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20200201001196 and 20200201001205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168335008284 + ... + 168335008403.

It is an arithmetic number, because the mean of its divisors is an integer number (2356690116816).

Almost surely, 220200201001220 is an apocalyptic number.

20200201001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200201001220 is an abundant number, since it is smaller than the sum of its proper divisors (36360361802364).

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

20200201001220 is a wasteful number, since it uses less digits than its factorization.

20200201001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336670016699 (or 336670016697 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20200201001220 its reverse (2210010200202), we get a palindrome (22410211201422).

The spelling of 20200201001220 in words is "twenty trillion, two hundred billion, two hundred one million, one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 336670016687 673340033374 1010010050061 1346680066748 1683350083435 2020020100122 3366700166870 4040040200244 5050050250305 6733400333740 10100100500610 20200201001220