21522442560 has 112 divisors (see below), whose sum is σ = 69923046336. Its totient is φ = 5605834752.

The previous prime is 21522442553. The next prime is 21522442567. The reversal of 21522442560 is 6524422512.

It is an interprime number because it is at equal distance from previous prime (21522442553) and next prime (21522442567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21522442567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219409 + ... + 301968.

Almost surely, 2^21522442560 is an apocalyptic number.

21522442560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21522442560 is an abundant number, since it is smaller than the sum of its proper divisors (48400603776).

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

21522442560 is a wasteful number, since it uses less digits than its factorization.

21522442560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521440 (or 521430 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The spelling of 21522442560 in words is "twenty-one billion, five hundred twenty-two million, four hundred forty-two thousand, five hundred sixty".