21021122095 has 64 divisors (see below), whose sum is σ = 27303091200. Its totient is φ = 15510666240.

The previous prime is 21021122071. The next prime is 21021122137. The reversal of 21021122095 is 59022112012.

It is not a de Polignac number, because 21021122095 - 2¹¹ = 21021120047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47883886 + ... + 47884324.

It is an arithmetic number, because the mean of its divisors is an integer number (426610800).

Almost surely, 2^21021122095 is an apocalyptic number.

21021122095 is a deficient number, since it is larger than the sum of its proper divisors (6281969105).

21021122095 is a wasteful number, since it uses less digits than its factorization.

21021122095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 21021122095 in words is "twenty-one billion, twenty-one million, one hundred twenty-two thousand, ninety-five".