21219274370 has 64 divisors (see below), whose sum is σ = 46241694720. Its totient is φ = 6843835392.

The previous prime is 21219274367. The next prime is 21219274399. The reversal of 21219274370 is 7347291212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3708752 + ... + 3714468.

It is an arithmetic number, because the mean of its divisors is an integer number (722526480).

Almost surely, 2^21219274370 is an apocalyptic number.

21219274370 is an abundant number, since it is smaller than the sum of its proper divisors (25022420350).

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

21219274370 is a wasteful number, since it uses less digits than its factorization.

21219274370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8867.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 21219274370 in words is "twenty-one billion, two hundred nineteen million, two hundred seventy-four thousand, three hundred seventy".