118812099021 has 16 divisors (see below), whose sum is σ = 197505827328. Its totient is φ = 61720570800.

The previous prime is 118812098989. The next prime is 118812099089. The reversal of 118812099021 is 120990218811.

It is a happy number.

It is not a de Polignac number, because 118812099021 - 2⁵ = 118812098989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118812099121) 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, 257168815 + ... + 257169276.

It is an arithmetic number, because the mean of its divisors is an integer number (12344114208).

Almost surely, 2^118812099021 is an apocalyptic number.

118812099021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118812099021 is a deficient number, since it is larger than the sum of its proper divisors (78693728307).

118812099021 is a wasteful number, since it uses less digits than its factorization.

118812099021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514338112.

The product of its (nonzero) digits is 20736, while the sum is 42.

The spelling of 118812099021 in words is "one hundred eighteen billion, eight hundred twelve million, ninety-nine thousand, twenty-one".