2121010032020 has 48 divisors (see below), whose sum is σ = 4990366620288. Its totient is φ = 750431064960.

The previous prime is 2121010032019. The next prime is 2121010032047. The reversal of 2121010032020 is 202300101212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121010031986 and 2121010032004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130275032 + ... + 130291311.

It is an arithmetic number, because the mean of its divisors is an integer number (103965971256).

Almost surely, 2^{2121010032020} is an apocalyptic number.

2121010032020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121010032020 is an abundant number, since it is smaller than the sum of its proper divisors (2869356588268).

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

2121010032020 is a wasteful number, since it uses less digits than its factorization.

2121010032020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260566400 (or 260566398 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2121010032020 its reverse (202300101212), we get a palindrome (2323310133232).

The spelling of 2121010032020 in words is "two trillion, one hundred twenty-one billion, ten million, thirty-two thousand, twenty".