210121233012020 has 48 divisors (see below), whose sum is σ = 481478271313536. Its totient is φ = 76390319760000.

The previous prime is 210121233012017. The next prime is 210121233012043. The reversal of 210121233012020 is 20210332121012.

210121233012020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 210121233011983 and 210121233012001.

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, 107790131 + ... + 109722170.

It is an arithmetic number, because the mean of its divisors is an integer number (10030797319032).

Almost surely, 2^{210121233012020} is an apocalyptic number.

210121233012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210121233012020 is an abundant number, since it is smaller than the sum of its proper divisors (271357038301516).

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

210121233012020 is a wasteful number, since it uses less digits than its factorization.

210121233012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217516712 (or 217516710 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 210121233012020 its reverse (20210332121012), we get a palindrome (230331565133032).

The spelling of 210121233012020 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred thirty-three million, twelve thousand, twenty".