20102122010220 has 48 divisors (see below), whose sum is σ = 57594917022720. Its totient is φ = 5235901546176.

The previous prime is 20102122010213. The next prime is 20102122010237. The reversal of 20102122010220 is 2201022120102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20102122010220.

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 15 ways as a sum of consecutive naturals, for example, 3895757500 + ... + 3895762659.

It is an arithmetic number, because the mean of its divisors is an integer number (1199894104640).

Almost surely, 2^{20102122010220} is an apocalyptic number.

20102122010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102122010220 is an abundant number, since it is smaller than the sum of its proper divisors (37492795012500).

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

20102122010220 is a wasteful number, since it uses less digits than its factorization.

20102122010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7791520214 (or 7791520212 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20102122010220 its reverse (2201022120102), we get a palindrome (22303144130322).

The spelling of 20102122010220 in words is "twenty trillion, one hundred two billion, one hundred twenty-two million, ten thousand, two hundred twenty".