118144221 has 8 divisors (see below), whose sum is σ = 169643040. Its totient is φ = 72704112.

The previous prime is 118144211. The next prime is 118144241. The reversal of 118144221 is 122441811.

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

It is not a de Polignac number, because 118144221 - 2⁷ = 118144093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 118144191 and 118144200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118144211) 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, 1514631 + ... + 1514708.

It is an arithmetic number, because the mean of its divisors is an integer number (21205380).

Almost surely, 2^118144221 is an apocalyptic number.

It is an amenable number.

118144221 is a deficient number, since it is larger than the sum of its proper divisors (51498819).

118144221 is a wasteful number, since it uses less digits than its factorization.

118144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029355.

The product of its digits is 512, while the sum is 24.

The square root of 118144221 is about 10869.4167736820. The cubic root of 118144221 is about 490.6865580651.

It can be divided in two parts, 11814 and 4221, that multiplied together give a palindrome (49866894).

The spelling of 118144221 in words is "one hundred eighteen million, one hundred forty-four thousand, two hundred twenty-one".