21113120095 has 4 divisors (see below), whose sum is σ = 25335744120. Its totient is φ = 16890496072.

The previous prime is 21113120071. The next prime is 21113120111. The reversal of 21113120095 is 59002131112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113120095 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 3 ways as a sum of consecutive naturals, for example, 2111312005 + ... + 2111312014.

It is an arithmetic number, because the mean of its divisors is an integer number (6333936030).

Almost surely, 2^21113120095 is an apocalyptic number.

21113120095 is a deficient number, since it is larger than the sum of its proper divisors (4222624025).

21113120095 is an equidigital number, since it uses as much as digits as its factorization.

21113120095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222624024.

The product of its (nonzero) digits is 540, while the sum is 25.

The spelling of 21113120095 in words is "twenty-one billion, one hundred thirteen million, one hundred twenty thousand, ninety-five".