231220023222 has 8 divisors (see below), whose sum is σ = 462440046456. Its totient is φ = 77073341072.

The previous prime is 231220023217. The next prime is 231220023227. The reversal of 231220023222 is 222320022132.

It is an interprime number because it is at equal distance from previous prime (231220023217) and next prime (231220023227).

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

231220023222 is an admirable number.

It is a super-2 number, since 2×231220023222² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231220023227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19268335263 + ... + 19268335274.

It is an arithmetic number, because the mean of its divisors is an integer number (57805005807).

Almost surely, 2^231220023222 is an apocalyptic number.

231220023222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231220023222 is a wasteful number, since it uses less digits than its factorization.

231220023222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38536670542.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 231220023222 its reverse (222320022132), we get a palindrome (453540045354).

The spelling of 231220023222 in words is "two hundred thirty-one billion, two hundred twenty million, twenty-three thousand, two hundred twenty-two".