118905552221 has 6 divisors (see below), whose sum is σ = 125493117822. Its totient is φ = 112647364920.

The previous prime is 118905552217. The next prime is 118905552229. The reversal of 118905552221 is 122255509811.

It can be written as a sum of positive squares in only one way, i.e., 100450329721 + 18455222500 = 316939^2 + 135850^2 .

It is not a de Polignac number, because 118905552221 - 2² = 118905552217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118905552229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164688770 + ... + 164689491.

It is an arithmetic number, because the mean of its divisors is an integer number (20915519637).

Almost surely, 2^118905552221 is an apocalyptic number.

It is an amenable number.

118905552221 is a deficient number, since it is larger than the sum of its proper divisors (6587565601).

118905552221 is an equidigital number, since it uses as much as digits as its factorization.

118905552221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329378299 (or 329378280 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 41.

The spelling of 118905552221 in words is "one hundred eighteen billion, nine hundred five million, five hundred fifty-two thousand, two hundred twenty-one".