21103392074 has 16 divisors (see below), whose sum is σ = 34030108800. Its totient is φ = 9783654624.

The previous prime is 21103392061. The next prime is 21103392083. The reversal of 21103392074 is 47029330112.

It is a self number, because there is not a number n which added to its sum of digits gives 21103392074.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5906219 + ... + 5909790.

It is an arithmetic number, because the mean of its divisors is an integer number (2126881800).

Almost surely, 2^21103392074 is an apocalyptic number.

21103392074 is a deficient number, since it is larger than the sum of its proper divisors (12926716726).

21103392074 is a wasteful number, since it uses less digits than its factorization.

21103392074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11816077.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 21103392074 in words is "twenty-one billion, one hundred three million, three hundred ninety-two thousand, seventy-four".