21201322095 has 24 divisors (see below), whose sum is σ = 36858032016. Its totient is φ = 11273810688.

The previous prime is 21201322069. The next prime is 21201322111. The reversal of 21201322095 is 59022310212.

It is a happy number.

It is not a de Polignac number, because 21201322095 - 2⁵ = 21201322063 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 683857 + ... + 714186.

It is an arithmetic number, because the mean of its divisors is an integer number (1535751334).

Almost surely, 2^21201322095 is an apocalyptic number.

21201322095 is a deficient number, since it is larger than the sum of its proper divisors (15656709921).

21201322095 is a wasteful number, since it uses less digits than its factorization.

21201322095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398391 (or 1398388 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 21201322095 in words is "twenty-one billion, two hundred one million, three hundred twenty-two thousand, ninety-five".