212011321057 has 2 divisors, whose sum is σ = 212011321058. Its totient is φ = 212011321056.

The previous prime is 212011321033. The next prime is 212011321073. The reversal of 212011321057 is 750123110212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200597390161 + 11413930896 = 447881^2 + 106836^2 .

It is a cyclic number.

It is not a de Polignac number, because 212011321057 - 2⁷ = 212011320929 is a prime.

It is not a weakly prime, because it can be changed into another prime (212011321007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005660528 + 106005660529.

It is an arithmetic number, because the mean of its divisors is an integer number (106005660529).

Almost surely, 2^212011321057 is an apocalyptic number.

It is an amenable number.

212011321057 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011321057 is an equidigital number, since it uses as much as digits as its factorization.

212011321057 is an evil number, because the sum of its binary digits is even.

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

Adding to 212011321057 its reverse (750123110212), we get a palindrome (962134431269).

The spelling of 212011321057 in words is "two hundred twelve billion, eleven million, three hundred twenty-one thousand, fifty-seven".