212333121631 has 2 divisors, whose sum is σ = 212333121632. Its totient is φ = 212333121630.

The previous prime is 212333121601. The next prime is 212333121661. The reversal of 212333121631 is 136121333212.

It is a balanced prime because it is at equal distance from previous prime (212333121601) and next prime (212333121661).

It is a cyclic number.

It is not a de Polignac number, because 212333121631 - 2⁵ = 212333121599 is a prime.

It is a super-2 number, since 2×212333121631² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212333121631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212333121601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106166560815 + 106166560816.

It is an arithmetic number, because the mean of its divisors is an integer number (106166560816).

Almost surely, 2^212333121631 is an apocalyptic number.

212333121631 is a deficient number, since it is larger than the sum of its proper divisors (1).

212333121631 is an equidigital number, since it uses as much as digits as its factorization.

212333121631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

Adding to 212333121631 its reverse (136121333212), we get a palindrome (348454454843).

The spelling of 212333121631 in words is "two hundred twelve billion, three hundred thirty-three million, one hundred twenty-one thousand, six hundred thirty-one".