210022111212 has 72 divisors (see below), whose sum is σ = 534643727184. Its totient is φ = 64108459008.

The previous prime is 210022111199. The next prime is 210022111241. The reversal of 210022111212 is 212111220012.

It is a super-2 number, since 2×210022111212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210022111191 and 210022111200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 690063 + ... + 946694.

It is an arithmetic number, because the mean of its divisors is an integer number (7425607322).

Almost surely, 2^210022111212 is an apocalyptic number.

It is an amenable number.

210022111212 is an abundant number, since it is smaller than the sum of its proper divisors (324621615972).

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

210022111212 is a wasteful number, since it uses less digits than its factorization.

210022111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636835 (or 1636816 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210022111212 its reverse (212111220012), we get a palindrome (422133331224).

The spelling of 210022111212 in words is "two hundred ten billion, twenty-two million, one hundred eleven thousand, two hundred twelve".