21102028095 has 16 divisors (see below), whose sum is σ = 33788874240. Its totient is φ = 11245871904.

The previous prime is 21102028091. The next prime is 21102028111. The reversal of 21102028095 is 59082020112.

It is not a de Polignac number, because 21102028095 - 2² = 21102028091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102028091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513499 + ... + 553068.

It is an arithmetic number, because the mean of its divisors is an integer number (2111804640).

Almost surely, 2^21102028095 is an apocalyptic number.

21102028095 is a deficient number, since it is larger than the sum of its proper divisors (12686846145).

21102028095 is a wasteful number, since it uses less digits than its factorization.

21102028095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067894.

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 21102028095 in words is "twenty-one billion, one hundred two million, twenty-eight thousand, ninety-five".