212333120231 has 24 divisors (see below), whose sum is σ = 231275036160. Its totient is φ = 194786816000.

The previous prime is 212333120227. The next prime is 212333120249. The reversal of 212333120231 is 132021333212.

It is not a de Polignac number, because 212333120231 - 2² = 212333120227 is a prime.

It is a super-2 number, since 2×212333120231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212333120197 and 212333120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212333120281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13630415 + ... + 13645983.

It is an arithmetic number, because the mean of its divisors is an integer number (9636459840).

Almost surely, 2^212333120231 is an apocalyptic number.

212333120231 is a deficient number, since it is larger than the sum of its proper divisors (18941915929).

212333120231 is a wasteful number, since it uses less digits than its factorization.

212333120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16795 (or 16778 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 212333120231 its reverse (132021333212), we get a palindrome (344354453443).

The spelling of 212333120231 in words is "two hundred twelve billion, three hundred thirty-three million, one hundred twenty thousand, two hundred thirty-one".