21132299974 has 8 divisors (see below), whose sum is σ = 31864411008. Its totient is φ = 10510829640.

The previous prime is 21132299963. The next prime is 21132300031. The reversal of 21132299974 is 47999223112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21132299974² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27659697 + ... + 27660460.

It is an arithmetic number, because the mean of its divisors is an integer number (3983051376).

Almost surely, 2^21132299974 is an apocalyptic number.

21132299974 is a deficient number, since it is larger than the sum of its proper divisors (10732111034).

21132299974 is a wasteful number, since it uses less digits than its factorization.

21132299974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55320350.

The product of its digits is 489888, while the sum is 49.

The spelling of 21132299974 in words is "twenty-one billion, one hundred thirty-two million, two hundred ninety-nine thousand, nine hundred seventy-four".