210111221112 has 64 divisors (see below), whose sum is σ = 565728159360. Its totient is φ = 64644566400.

The previous prime is 210111221077. The next prime is 210111221219. The reversal of 210111221112 is 211122111012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 210111221091 and 210111221100.

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, 6939687 + ... + 6969897.

It is an arithmetic number, because the mean of its divisors is an integer number (8839502490).

Almost surely, 2^210111221112 is an apocalyptic number.

It is an amenable number.

210111221112 is an abundant number, since it is smaller than the sum of its proper divisors (355616938248).

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

210111221112 is a wasteful number, since it uses less digits than its factorization.

210111221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52524 (or 52520 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210111221112 its reverse (211122111012), we get a palindrome (421233332124).

The spelling of 210111221112 in words is "two hundred ten billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twelve".