21021200112110 has 32 divisors (see below), whose sum is σ = 41281708400352. Its totient is φ = 7643384721280.

The previous prime is 21021200112047. The next prime is 21021200112181. The reversal of 21021200112110 is 1121100212012.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7372157 + ... + 9817896.

It is an arithmetic number, because the mean of its divisors is an integer number (1290053387511).

Almost surely, 2^{21021200112110} is an apocalyptic number.

21021200112110 is a deficient number, since it is larger than the sum of its proper divisors (20260508288242).

21021200112110 is a wasteful number, since it uses less digits than its factorization.

21021200112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17201188.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21021200112110 its reverse (1121100212012), we get a palindrome (22142300324122).

The spelling of 21021200112110 in words is "twenty-one trillion, twenty-one billion, two hundred million, one hundred twelve thousand, one hundred ten".