118051221 has 8 divisors (see below), whose sum is σ = 158312160. Its totient is φ = 78245552.

The previous prime is 118051217. The next prime is 118051223. The reversal of 118051221 is 122150811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118051221 - 2² = 118051217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118051223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113211 + ... + 114248.

It is an arithmetic number, because the mean of its divisors is an integer number (19789020).

Almost surely, 2^118051221 is an apocalyptic number.

It is an amenable number.

118051221 is a deficient number, since it is larger than the sum of its proper divisors (40260939).

118051221 is a wasteful number, since it uses less digits than its factorization.

118051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227635.

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 118051221 is about 10865.1378730323. The cubic root of 118051221 is about 490.5577724484.

The spelling of 118051221 in words is "one hundred eighteen million, fifty-one thousand, two hundred twenty-one".