210111103212 has 24 divisors (see below), whose sum is σ = 492826048512. Its totient is φ = 69670347600.

The previous prime is 210111103193. The next prime is 210111103247. The reversal of 210111103212 is 212301111012.

It is a junction number, because it is equal to n+sod(n) for n = 210111103191 and 210111103200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45833464 + ... + 45838047.

It is an arithmetic number, because the mean of its divisors is an integer number (20534418688).

Almost surely, 2^210111103212 is an apocalyptic number.

It is an amenable number.

210111103212 is an abundant number, since it is smaller than the sum of its proper divisors (282714945300).

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

210111103212 is a wasteful number, since it uses less digits than its factorization.

210111103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91671709 (or 91671707 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 210111103212 its reverse (212301111012), we get a palindrome (422412214224).

The spelling of 210111103212 in words is "two hundred ten billion, one hundred eleven million, one hundred three thousand, two hundred twelve".