21124232292 has 12 divisors (see below), whose sum is σ = 49289875376. Its totient is φ = 7041410760.

The previous prime is 21124232231. The next prime is 21124232299. The reversal of 21124232292 is 29223242112.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (21124232299) 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, 880176334 + ... + 880176357.

Almost surely, 2^21124232292 is an apocalyptic number.

It is an amenable number.

21124232292 is an abundant number, since it is smaller than the sum of its proper divisors (28165643084).

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

21124232292 is a wasteful number, since it uses less digits than its factorization.

21124232292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760352698 (or 1760352696 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The spelling of 21124232292 in words is "twenty-one billion, one hundred twenty-four million, two hundred thirty-two thousand, two hundred ninety-two".