22212549520 has 160 divisors (see below), whose sum is σ = 62859691008. Its totient is φ = 7125786624.

The previous prime is 22212549479. The next prime is 22212549553. The reversal of 22212549520 is 2594521222.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1640217 + ... + 1653703.

Almost surely, 2^22212549520 is an apocalyptic number.

22212549520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212549520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31429845504).

22212549520 is an abundant number, since it is smaller than the sum of its proper divisors (40647141488).

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

22212549520 is a wasteful number, since it uses less digits than its factorization.

22212549520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13697 (or 13691 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 22212549520 in words is "twenty-two billion, two hundred twelve million, five hundred forty-nine thousand, five hundred twenty".