21107192270 has 32 divisors (see below), whose sum is σ = 39244455936. Its totient is φ = 8165124000.

The previous prime is 21107192263. The next prime is 21107192297. The reversal of 21107192270 is 7229170112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464045 + ... + 507495.

It is an arithmetic number, because the mean of its divisors is an integer number (1226389248).

Almost surely, 2^21107192270 is an apocalyptic number.

21107192270 is a deficient number, since it is larger than the sum of its proper divisors (18137263666).

21107192270 is a wasteful number, since it uses less digits than its factorization.

21107192270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45056.

The product of its (nonzero) digits is 3528, while the sum is 32.

The spelling of 21107192270 in words is "twenty-one billion, one hundred seven million, one hundred ninety-two thousand, two hundred seventy".