222231312312 has 32 divisors (see below), whose sum is σ = 588259357200. Its totient is φ = 69719627264.

The previous prime is 222231312257. The next prime is 222231312389. The reversal of 222231312312 is 213213132222.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272341887 + ... + 272342702.

Almost surely, 2^222231312312 is an apocalyptic number.

It is an amenable number.

222231312312 is an abundant number, since it is smaller than the sum of its proper divisors (366028044888).

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

222231312312 is a wasteful number, since it uses less digits than its factorization.

222231312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544684615 (or 544684611 counting only the distinct ones).

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

Adding to 222231312312 its reverse (213213132222), we get a palindrome (435444444534).

The spelling of 222231312312 in words is "two hundred twenty-two billion, two hundred thirty-one million, three hundred twelve thousand, three hundred twelve".