10211012557 has 2 divisors, whose sum is σ = 10211012558. Its totient is φ = 10211012556.

The previous prime is 10211012519. The next prime is 10211012569. The reversal of 10211012557 is 75521011201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9226370916 + 984641641 = 96054^2 + 31379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10211012557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211012597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105506278 + 5105506279.

It is an arithmetic number, because the mean of its divisors is an integer number (5105506279).

Almost surely, 2^10211012557 is an apocalyptic number.

It is an amenable number.

10211012557 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211012557 is an equidigital number, since it uses as much as digits as its factorization.

10211012557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 25.

Adding to 10211012557 its reverse (75521011201), we get a palindrome (85732023758).

The spelling of 10211012557 in words is "ten billion, two hundred eleven million, twelve thousand, five hundred fifty-seven".