21232221022112 has 48 divisors (see below), whose sum is σ = 43158067126272. Its totient is φ = 10271580399360.

The previous prime is 21232221022099. The next prime is 21232221022163. The reversal of 21232221022112 is 21122012223212.

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, 2758433 + ... + 7076255.

It is an arithmetic number, because the mean of its divisors is an integer number (899126398464).

Almost surely, 2^{21232221022112} is an apocalyptic number.

It is an amenable number.

21232221022112 is an abundant number, since it is smaller than the sum of its proper divisors (21925846104160).

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

21232221022112 is a wasteful number, since it uses less digits than its factorization.

21232221022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322821 (or 4322813 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21232221022112 its reverse (21122012223212), we get a palindrome (42354233245324).

The spelling of 21232221022112 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred twenty-one million, twenty-two thousand, one hundred twelve".