212231032131121 has 2 divisors, whose sum is σ = 212231032131122. Its totient is φ = 212231032131120.

The previous prime is 212231032131119. The next prime is 212231032131161. The reversal of 212231032131121 is 121131230132212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200793547786896 + 11437484344225 = 14170164^2 + 3381935^2 .

It is a cyclic number.

It is not a de Polignac number, because 212231032131121 - 2¹ = 212231032131119 is a prime.

Together with 212231032131119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212231032131161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115516065560 + 106115516065561.

It is an arithmetic number, because the mean of its divisors is an integer number (106115516065561).

Almost surely, 2^{212231032131121} is an apocalyptic number.

It is an amenable number.

212231032131121 is a deficient number, since it is larger than the sum of its proper divisors (1).

212231032131121 is an equidigital number, since it uses as much as digits as its factorization.

212231032131121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 212231032131121 its reverse (121131230132212), we get a palindrome (333362262263333).

The spelling of 212231032131121 in words is "two hundred twelve trillion, two hundred thirty-one billion, thirty-two million, one hundred thirty-one thousand, one hundred twenty-one".