118222921 has 16 divisors (see below), whose sum is σ = 131241600. Its totient is φ = 105988608.

The previous prime is 118222919. The next prime is 118222927. The reversal of 118222921 is 129222811.

It is a cyclic number.

It is not a de Polignac number, because 118222921 - 2¹ = 118222919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118222921.

It is not an unprimeable number, because it can be changed into a prime (118222927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40995 + ... + 43783.

It is an arithmetic number, because the mean of its divisors is an integer number (8202600).

Almost surely, 2^118222921 is an apocalyptic number.

It is an amenable number.

118222921 is a deficient number, since it is larger than the sum of its proper divisors (13018679).

118222921 is a wasteful number, since it uses less digits than its factorization.

118222921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928.

The product of its digits is 1152, while the sum is 28.

The square root of 118222921 is about 10873.0364204301. The cubic root of 118222921 is about 490.7954883771.

The spelling of 118222921 in words is "one hundred eighteen million, two hundred twenty-two thousand, nine hundred twenty-one".