210112020021 has 16 divisors (see below), whose sum is σ = 286947625536. Its totient is φ = 136681982976.

The previous prime is 210112019993. The next prime is 210112020029. The reversal of 210112020021 is 120020211012.

It is not a de Polignac number, because 210112020021 - 2⁵ = 210112019989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210112019979 and 210112020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112020029) by changing a digit.

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, 673260 + ... + 934613.

It is an arithmetic number, because the mean of its divisors is an integer number (17934226596).

Almost surely, 2^210112020021 is an apocalyptic number.

It is an amenable number.

210112020021 is a deficient number, since it is larger than the sum of its proper divisors (76835605515).

210112020021 is a wasteful number, since it uses less digits than its factorization.

210112020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608932.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210112020021 its reverse (120020211012), we get a palindrome (330132231033).

The spelling of 210112020021 in words is "two hundred ten billion, one hundred twelve million, twenty thousand, twenty-one".