21200392814 has 4 divisors (see below), whose sum is σ = 31800589224. Its totient is φ = 10600196406.

The previous prime is 21200392799. The next prime is 21200392819. The reversal of 21200392814 is 41829300212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200392819) by changing a digit.

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 as a sum of consecutive naturals, namely, 5300098202 + ... + 5300098205.

It is an arithmetic number, because the mean of its divisors is an integer number (7950147306).

Almost surely, 2^21200392814 is an apocalyptic number.

21200392814 is a deficient number, since it is larger than the sum of its proper divisors (10600196410).

21200392814 is a wasteful number, since it uses less digits than its factorization.

21200392814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600196409.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 21200392814 in words is "twenty-one billion, two hundred million, three hundred ninety-two thousand, eight hundred fourteen".