21222010222112 has 48 divisors (see below), whose sum is σ = 47751494559552. Its totient is φ = 9094771703040.

The previous prime is 21222010222051. The next prime is 21222010222123. The reversal of 21222010222112 is 21122201022212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3515378 + ... + 7402830.

It is an arithmetic number, because the mean of its divisors is an integer number (994822803324).

Almost surely, 2^{21222010222112} is an apocalyptic number.

It is an amenable number.

21222010222112 is an abundant number, since it is smaller than the sum of its proper divisors (26529484337440).

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

21222010222112 is a wasteful number, since it uses less digits than its factorization.

21222010222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911841 (or 3911833 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21222010222112 its reverse (21122201022212), we get a palindrome (42344211244324).

The spelling of 21222010222112 in words is "twenty-one trillion, two hundred twenty-two billion, ten million, two hundred twenty-two thousand, one hundred twelve".