21304224986 has 32 divisors (see below), whose sum is σ = 35454931200. Its totient is φ = 9519943680.

The previous prime is 21304224979. The next prime is 21304224989. The reversal of 21304224986 is 68942240312.

It is not an unprimeable number, because it can be changed into a prime (21304224989) 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, 378650 + ... + 431258.

It is an arithmetic number, because the mean of its divisors is an integer number (1107966600).

Almost surely, 2^21304224986 is an apocalyptic number.

21304224986 is a deficient number, since it is larger than the sum of its proper divisors (14150706214).

21304224986 is a wasteful number, since it uses less digits than its factorization.

21304224986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52934.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 21304224986 in words is "twenty-one billion, three hundred four million, two hundred twenty-four thousand, nine hundred eighty-six".