212221031308 has 24 divisors (see below), whose sum is σ = 436314569040. Its totient is φ = 89043789120.

The previous prime is 212221031291. The next prime is 212221031357. The reversal of 212221031308 is 803130122212.

212221031308 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212221031308² (a number of 23 digits) contains 22 as substring.

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, 185507323 + ... + 185508466.

It is an arithmetic number, because the mean of its divisors is an integer number (18179773710).

Almost surely, 2^212221031308 is an apocalyptic number.

It is an amenable number.

212221031308 is an abundant number, since it is smaller than the sum of its proper divisors (224093537732).

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

212221031308 is a wasteful number, since it uses less digits than its factorization.

212221031308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371015817 (or 371015815 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 212221031308 in words is "two hundred twelve billion, two hundred twenty-one million, thirty-one thousand, three hundred eight".