31222112212212 has 24 divisors (see below), whose sum is σ = 72878870262912. Its totient is φ = 10403474294400.

The previous prime is 31222112212177. The next prime is 31222112212223. The reversal of 31222112212212 is 21221221122213.

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, 487021989 + ... + 487086092.

It is an arithmetic number, because the mean of its divisors is an integer number (3036619594288).

Almost surely, 2^{31222112212212} is an apocalyptic number.

It is an amenable number.

31222112212212 is an abundant number, since it is smaller than the sum of its proper divisors (41656758050700).

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

31222112212212 is a wasteful number, since it uses less digits than its factorization.

31222112212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974110759 (or 974110757 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

Adding to 31222112212212 its reverse (21221221122213), we get a palindrome (52443333334425).

The spelling of 31222112212212 in words is "thirty-one trillion, two hundred twenty-two billion, one hundred twelve million, two hundred twelve thousand, two hundred twelve".