99113331020021 has 4 divisors (see below), whose sum is σ = 99114063110700. Its totient is φ = 99112598929344.

The previous prime is 99113331019999. The next prime is 99113331020047. The reversal of 99113331020021 is 12002013331199.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24310914972100 + 74802416047921 = 4930610^2 + 8648839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99113331020021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99113331010021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365842226 + ... + 366113043.

It is an arithmetic number, because the mean of its divisors is an integer number (24778515777675).

Almost surely, 2^{99113331020021} is an apocalyptic number.

It is an amenable number.

99113331020021 is a deficient number, since it is larger than the sum of its proper divisors (732090679).

99113331020021 is a wasteful number, since it uses less digits than its factorization.

99113331020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732090678.

The product of its (nonzero) digits is 8748, while the sum is 35.

The spelling of 99113331020021 in words is "ninety-nine trillion, one hundred thirteen billion, three hundred thirty-one million, twenty thousand, twenty-one".