21225774112 has 48 divisors (see below), whose sum is σ = 44427942720. Its totient is φ = 9959901952.

The previous prime is 21225774103. The next prime is 21225774137. The reversal of 21225774112 is 21147752212.

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, 233062 + ... + 311077.

It is an arithmetic number, because the mean of its divisors is an integer number (925582140).

Almost surely, 2^21225774112 is an apocalyptic number.

It is an amenable number.

21225774112 is an abundant number, since it is smaller than the sum of its proper divisors (23202168608).

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

21225774112 is a wasteful number, since it uses less digits than its factorization.

21225774112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544225 (or 544217 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The spelling of 21225774112 in words is "twenty-one billion, two hundred twenty-five million, seven hundred seventy-four thousand, one hundred twelve".