21302001292 has 96 divisors (see below), whose sum is σ = 45314648064. Its totient is φ = 8629286400.

The previous prime is 21302001289. The next prime is 21302001293. The reversal of 21302001292 is 29210020312.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (21302001293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9272688 + ... + 9274984.

It is an arithmetic number, because the mean of its divisors is an integer number (472027584).

Almost surely, 2^21302001292 is an apocalyptic number.

21302001292 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21302001292 is an abundant number, since it is smaller than the sum of its proper divisors (24012646772).

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

21302001292 is a wasteful number, since it uses less digits than its factorization.

21302001292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879 (or 2877 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 21302001292 in words is "twenty-one billion, three hundred two million, one thousand, two hundred ninety-two".