120228665 has 4 divisors (see below), whose sum is σ = 144274404. Its totient is φ = 96182928.

The previous prime is 120228617. The next prime is 120228697. The reversal of 120228665 is 566822021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 93644329 + 26584336 = 9677^2 + 5156^2 .

It is a cyclic number.

It is not a de Polignac number, because 120228665 - 2²² = 116034361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12022862 + ... + 12022871.

It is an arithmetic number, because the mean of its divisors is an integer number (36068601).

Almost surely, 2^120228665 is an apocalyptic number.

It is an amenable number.

120228665 is a deficient number, since it is larger than the sum of its proper divisors (24045739).

120228665 is an equidigital number, since it uses as much as digits as its factorization.

120228665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24045738.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 120228665 is about 10964.8832643125. The cubic root of 120228665 is about 493.5555140668. Note that the first 4 decimals are identical.

The spelling of 120228665 in words is "one hundred twenty million, two hundred twenty-eight thousand, six hundred sixty-five".