118721522 has 4 divisors (see below), whose sum is σ = 178082286. Its totient is φ = 59360760.

The previous prime is 118721509. The next prime is 118721543. The reversal of 118721522 is 225127811.

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

It can be written as a sum of positive squares in only one way, i.e., 114725521 + 3996001 = 10711^2 + 1999^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29680379 + ... + 29680382.

Almost surely, 2^118721522 is an apocalyptic number.

118721522 is a deficient number, since it is larger than the sum of its proper divisors (59360764).

118721522 is an equidigital number, since it uses as much as digits as its factorization.

118721522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59360763.

The product of its digits is 2240, while the sum is 29.

The square root of 118721522 is about 10895.9406202494. The cubic root of 118721522 is about 491.4844915553.

The spelling of 118721522 in words is "one hundred eighteen million, seven hundred twenty-one thousand, five hundred twenty-two".