21092113075 has 24 divisors (see below), whose sum is σ = 28570760640. Its totient is φ = 15318813600.

The previous prime is 21092113057. The next prime is 21092113093. The reversal of 21092113075 is 57031129012.

It is an interprime number because it is at equal distance from previous prime (21092113057) and next prime (21092113093).

It is not a de Polignac number, because 21092113075 - 2⁵ = 21092113043 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151332 + ... + 255118.

It is an arithmetic number, because the mean of its divisors is an integer number (1190448360).

Almost surely, 2^21092113075 is an apocalyptic number.

21092113075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21092113075 is a deficient number, since it is larger than the sum of its proper divisors (7478647565).

21092113075 is a wasteful number, since it uses less digits than its factorization.

21092113075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104547 (or 104542 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The spelling of 21092113075 in words is "twenty-one billion, ninety-two million, one hundred thirteen thousand, seventy-five".