210112110021 has 32 divisors (see below), whose sum is σ = 309759129216. Its totient is φ = 125624160000.

The previous prime is 210112110007. The next prime is 210112110083. The reversal of 210112110021 is 120011211012.

It is not a de Polignac number, because 210112110021 - 2²¹ = 210110012869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210112109979 and 210112110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112110421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 809451 + ... + 1037031.

It is an arithmetic number, because the mean of its divisors is an integer number (9679972788).

Almost surely, 2^210112110021 is an apocalyptic number.

It is an amenable number.

210112110021 is a deficient number, since it is larger than the sum of its proper divisors (99647019195).

210112110021 is a wasteful number, since it uses less digits than its factorization.

210112110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227973.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210112110021 its reverse (120011211012), we get a palindrome (330123321033).

The spelling of 210112110021 in words is "two hundred ten billion, one hundred twelve million, one hundred ten thousand, twenty-one".