211012231057 has 2 divisors, whose sum is σ = 211012231058. Its totient is φ = 211012231056.

The previous prime is 211012231013. The next prime is 211012231063. The reversal of 211012231057 is 750132210112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137549007376 + 73463223681 = 370876^2 + 271041^2 .

It is a cyclic number.

It is not a de Polignac number, because 211012231057 - 2¹⁵ = 211012198289 is a prime.

It is not a weakly prime, because it can be changed into another prime (211012231097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105506115528 + 105506115529.

It is an arithmetic number, because the mean of its divisors is an integer number (105506115529).

Almost surely, 2^211012231057 is an apocalyptic number.

It is an amenable number.

211012231057 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012231057 is an equidigital number, since it uses as much as digits as its factorization.

211012231057 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 211012231057 its reverse (750132210112), we get a palindrome (961144441169).

The spelling of 211012231057 in words is "two hundred eleven billion, twelve million, two hundred thirty-one thousand, fifty-seven".