21722885088 has 48 divisors (see below), whose sum is σ = 57825726336. Its totient is φ = 7138974080.

The previous prime is 21722885057. The next prime is 21722885089. The reversal of 21722885088 is 88058822712.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 21722885088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21722885089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586706 + ... + 1600337.

It is an arithmetic number, because the mean of its divisors is an integer number (1204702632).

Almost surely, 2^21722885088 is an apocalyptic number.

It is an amenable number.

21722885088 is an abundant number, since it is smaller than the sum of its proper divisors (36102841248).

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

21722885088 is a wasteful number, since it uses less digits than its factorization.

21722885088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187127 (or 3187119 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 51.

The spelling of 21722885088 in words is "twenty-one billion, seven hundred twenty-two million, eight hundred eighty-five thousand, eighty-eight".