223031312122 has 4 divisors (see below), whose sum is σ = 334546968186. Its totient is φ = 111515656060.

The previous prime is 223031312117. The next prime is 223031312131. The reversal of 223031312122 is 221213130322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221213130322 = 2 ⋅110606565161.

It can be written as a sum of positive squares in only one way, i.e., 135415904121 + 87615408001 = 367989^2 + 295999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 223031312093 and 223031312102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55757828029 + ... + 55757828032.

Almost surely, 2^223031312122 is an apocalyptic number.

223031312122 is a deficient number, since it is larger than the sum of its proper divisors (111515656064).

223031312122 is a wasteful number, since it uses less digits than its factorization.

223031312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111515656063.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223031312122 its reverse (221213130322), we get a palindrome (444244442444).

The spelling of 223031312122 in words is "two hundred twenty-three billion, thirty-one million, three hundred twelve thousand, one hundred twenty-two".