212331222231 has 8 divisors (see below), whose sum is σ = 285856920960. Its totient is φ = 140179835832.

The previous prime is 212331222227. The next prime is 212331222247. The reversal of 212331222231 is 132222133212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212331222231 - 2² = 212331222227 is a prime.

It is a super-2 number, since 2×212331222231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212331222221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343577721 + ... + 343578338.

It is an arithmetic number, because the mean of its divisors is an integer number (35732115120).

Almost surely, 2^212331222231 is an apocalyptic number.

212331222231 is a deficient number, since it is larger than the sum of its proper divisors (73525698729).

212331222231 is a wasteful number, since it uses less digits than its factorization.

212331222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687156165.

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

Adding to 212331222231 its reverse (132222133212), we get a palindrome (344553355443).

The spelling of 212331222231 in words is "two hundred twelve billion, three hundred thirty-one million, two hundred twenty-two thousand, two hundred thirty-one".