210111000012 has 36 divisors (see below), whose sum is σ = 545468350336. Its totient is φ = 68144107680.

The previous prime is 210110999957. The next prime is 210111000059. The reversal of 210111000012 is 210000111012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 210110999958 and 210111000003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78869164 + ... + 78871827.

Almost surely, 2^210111000012 is an apocalyptic number.

It is an amenable number.

210111000012 is an abundant number, since it is smaller than the sum of its proper divisors (335357350324).

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

210111000012 is a wasteful number, since it uses less digits than its factorization.

210111000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157741038 (or 157741033 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 210111000012 its reverse (210000111012), we get a palindrome (420111111024).

The spelling of 210111000012 in words is "two hundred ten billion, one hundred eleven million, twelve", and thus it is an aban number.