21319800088 has 16 divisors (see below), whose sum is σ = 40522223880. Its totient is φ = 10513873728.

The previous prime is 21319800083. The next prime is 21319800119. The reversal of 21319800088 is 88000891312.

It is a self number, because there is not a number n which added to its sum of digits gives 21319800088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21319800083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18252670 + ... + 18253837.

Almost surely, 2^21319800088 is an apocalyptic number.

It is an amenable number.

21319800088 is a deficient number, since it is larger than the sum of its proper divisors (19202423792).

21319800088 is a wasteful number, since it uses less digits than its factorization.

21319800088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36506586 (or 36506582 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 21319800088 in words is "twenty-one billion, three hundred nineteen million, eight hundred thousand, eighty-eight".