212231110057 has 2 divisors, whose sum is σ = 212231110058. Its totient is φ = 212231110056.

The previous prime is 212231110043. The next prime is 212231110111. The reversal of 212231110057 is 750011132212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201371177536 + 10859932521 = 448744^2 + 104211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212231110057 is a prime.

It is not a weakly prime, because it can be changed into another prime (212231110957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115555028 + 106115555029.

It is an arithmetic number, because the mean of its divisors is an integer number (106115555029).

Almost surely, 2^212231110057 is an apocalyptic number.

It is an amenable number.

212231110057 is a deficient number, since it is larger than the sum of its proper divisors (1).

212231110057 is an equidigital number, since it uses as much as digits as its factorization.

212231110057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

Adding to 212231110057 its reverse (750011132212), we get a palindrome (962242242269).

The spelling of 212231110057 in words is "two hundred twelve billion, two hundred thirty-one million, one hundred ten thousand, fifty-seven".