202102103031020 has 24 divisors (see below), whose sum is σ = 438105203991168. Its totient is φ = 78233072140800.

The previous prime is 202102103031019. The next prime is 202102103031041. The reversal of 202102103031020 is 20130301201202.

It is a super-2 number, since 2×202102103031020² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202102103031020.

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, 162985566341 + ... + 162985567580.

It is an arithmetic number, because the mean of its divisors is an integer number (18254383499632).

Almost surely, 2^{202102103031020} is an apocalyptic number.

202102103031020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102103031020 is an abundant number, since it is smaller than the sum of its proper divisors (236003100960148).

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

202102103031020 is a wasteful number, since it uses less digits than its factorization.

202102103031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325971133961 (or 325971133959 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 202102103031020 its reverse (20130301201202), we get a palindrome (222232404232222).

The spelling of 202102103031020 in words is "two hundred two trillion, one hundred two billion, one hundred three million, thirty-one thousand, twenty".