99002111121 has 12 divisors (see below), whose sum is σ = 146867997172. Its totient is φ = 64217585376.

The previous prime is 99002111093. The next prime is 99002111123. The reversal of 99002111121 is 12111120099.

It can be written as a sum of positive squares in 2 ways, for example, as 87876080721 + 11126030400 = 296439^2 + 105480^2 .

It is not a de Polignac number, because 99002111121 - 2⁶ = 99002111057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99002111123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148651486 + ... + 148652151.

Almost surely, 2^99002111121 is an apocalyptic number.

It is an amenable number.

99002111121 is a deficient number, since it is larger than the sum of its proper divisors (47865886051).

99002111121 is a wasteful number, since it uses less digits than its factorization.

99002111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297303680 (or 297303677 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 99002111121 in words is "ninety-nine billion, two million, one hundred eleven thousand, one hundred twenty-one".