123212223231222 has 16 divisors (see below), whose sum is σ = 249193260468720. Its totient is φ = 40609272076032.

The previous prime is 123212223231221. The next prime is 123212223231233. The reversal of 123212223231222 is 222132322212321.

It is a super-2 number, since 2×123212223231222² (a number of 29 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 123212223231222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123212223231221) 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 7 ways as a sum of consecutive naturals, for example, 115367249683 + ... + 115367250750.

It is an arithmetic number, because the mean of its divisors is an integer number (15574578779295).

Almost surely, 2^{123212223231222} is an apocalyptic number.

123212223231222 is an abundant number, since it is smaller than the sum of its proper divisors (125981037237498).

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

123212223231222 is a wasteful number, since it uses less digits than its factorization.

123212223231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230734500527.

The product of its digits is 13824, while the sum is 30.

Adding to 123212223231222 its reverse (222132322212321), we get a palindrome (345344545443543).

The spelling of 123212223231222 in words is "one hundred twenty-three trillion, two hundred twelve billion, two hundred twenty-three million, two hundred thirty-one thousand, two hundred twenty-two".