221212022210112 has 56 divisors (see below), whose sum is σ = 601108794606016. Its totient is φ = 71744439633408.

The previous prime is 221212022210041. The next prime is 221212022210119. The reversal of 221212022210112 is 211012220212122.

It is not an unprimeable number, because it can be changed into a prime (221212022210119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15569532748 + ... + 15569546955.

Almost surely, 2^{221212022210112} is an apocalyptic number.

It is an amenable number.

221212022210112 is an abundant number, since it is smaller than the sum of its proper divisors (379896772395904).

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

221212022210112 is a wasteful number, since it uses less digits than its factorization.

221212022210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31139079755 (or 31139079745 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221212022210112 its reverse (211012220212122), we get a palindrome (432224242422234).

The spelling of 221212022210112 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty-two million, two hundred ten thousand, one hundred twelve".