88992000021 has 16 divisors (see below), whose sum is σ = 120368567808. Its totient is φ = 58472290800.

The previous prime is 88992000017. The next prime is 88992000043. The reversal of 88992000021 is 12000029988.

88992000021 is a nontrivial binomial coefficient, being equal to C(421882, 2).

It is not a de Polignac number, because 88992000021 - 2² = 88992000017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88992000001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562510 + ... + 703136.

It is an arithmetic number, because the mean of its divisors is an integer number (7523035488).

Almost surely, 2^88992000021 is an apocalyptic number.

88992000021 is the 421881-st triangular number and also the 210941-st hexagonal number.

It is an amenable number.

88992000021 is a deficient number, since it is larger than the sum of its proper divisors (31376567787).

88992000021 is a wasteful number, since it uses less digits than its factorization.

88992000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143672.

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 88992000021 in words is "eighty-eight billion, nine hundred ninety-two million, twenty-one", and thus it is an aban number.