22311231222 has 64 divisors (see below), whose sum is σ = 54422323200. Its totient is φ = 5952393216.

The previous prime is 22311231191. The next prime is 22311231223. The reversal of 22311231222 is 22213211322.

It is a super-3 number, since 3×22311231222³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22311231223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32347 + ... + 213702.

It is an arithmetic number, because the mean of its divisors is an integer number (850348800).

Almost surely, 2^22311231222 is an apocalyptic number.

22311231222 is an abundant number, since it is smaller than the sum of its proper divisors (32111091978).

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

22311231222 is a wasteful number, since it uses less digits than its factorization.

22311231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246205.

The product of its digits is 576, while the sum is 21.

Adding to 22311231222 its reverse (22213211322), we get a palindrome (44524442544).

The spelling of 22311231222 in words is "twenty-two billion, three hundred eleven million, two hundred thirty-one thousand, two hundred twenty-two".