222123312231 has 16 divisors (see below), whose sum is σ = 304536783744. Its totient is φ = 143905706784.

The previous prime is 222123312167. The next prime is 222123312253. The reversal of 222123312231 is 132213321222.

It is not a de Polignac number, because 222123312231 - 2⁶ = 222123312167 is a prime.

It is a super-2 number, since 2×222123312231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123312431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1118065 + ... + 1301658.

It is an arithmetic number, because the mean of its divisors is an integer number (19033548984).

Almost surely, 2^222123312231 is an apocalyptic number.

222123312231 is a deficient number, since it is larger than the sum of its proper divisors (82413471513).

222123312231 is a wasteful number, since it uses less digits than its factorization.

222123312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420590.

The product of its digits is 1728, while the sum is 24.

Adding to 222123312231 its reverse (132213321222), we get a palindrome (354336633453).

The spelling of 222123312231 in words is "two hundred twenty-two billion, one hundred twenty-three million, three hundred twelve thousand, two hundred thirty-one".