220512239 has 4 divisors (see below), whose sum is σ = 220546656. Its totient is φ = 220477824.

The previous prime is 220512217. The next prime is 220512283. The reversal of 220512239 is 932215022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932215022 = 2 ⋅466107511.

It is a cyclic number.

It is not a de Polignac number, because 220512239 - 2²⁴ = 203735023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220512289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4439 + ... + 21464.

It is an arithmetic number, because the mean of its divisors is an integer number (55136664).

Almost surely, 2^220512239 is an apocalyptic number.

220512239 is a deficient number, since it is larger than the sum of its proper divisors (34417).

220512239 is an equidigital number, since it uses as much as digits as its factorization.

220512239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34416.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 220512239 is about 14849.6545077655. The cubic root of 220512239 is about 604.1492392870.

The spelling of 220512239 in words is "two hundred twenty million, five hundred twelve thousand, two hundred thirty-nine".