21522622512 has 40 divisors (see below), whose sum is σ = 55688300800. Its totient is φ = 7162827840.

The previous prime is 21522622507. The next prime is 21522622549.

21522622512 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×21522622512³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21522622512.

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, 325012 + ... + 385587.

It is an arithmetic number, because the mean of its divisors is an integer number (1392207520).

Almost surely, 2^21522622512 is an apocalyptic number.

It is an amenable number.

21522622512 is an abundant number, since it is smaller than the sum of its proper divisors (34165678288).

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

21522622512 is a wasteful number, since it uses less digits than its factorization.

21522622512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711241 (or 711235 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The spelling of 21522622512 in words is "twenty-one billion, five hundred twenty-two million, six hundred twenty-two thousand, five hundred twelve".