99437291121 has 16 divisors (see below), whose sum is σ = 152680163328. Its totient is φ = 56387557200.

The previous prime is 99437291053. The next prime is 99437291159. The reversal of 99437291121 is 12119273499.

It is not a de Polignac number, because 99437291121 - 2¹⁷ = 99437160049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99437291221) 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, 18070185 + ... + 18075686.

It is an arithmetic number, because the mean of its divisors is an integer number (9542510208).

Almost surely, 2^99437291121 is an apocalyptic number.

It is an amenable number.

99437291121 is a deficient number, since it is larger than the sum of its proper divisors (53242872207).

99437291121 is a wasteful number, since it uses less digits than its factorization.

99437291121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36146012.

The product of its digits is 244944, while the sum is 48.

The spelling of 99437291121 in words is "ninety-nine billion, four hundred thirty-seven million, two hundred ninety-one thousand, one hundred twenty-one".