10121111057 has 2 divisors, whose sum is σ = 10121111058. Its totient is φ = 10121111056.

The previous prime is 10121111023. The next prime is 10121111071. The reversal of 10121111057 is 75011112101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8768636881 + 1352474176 = 93641^2 + 36776^2 .

It is an emirp because it is prime and its reverse (75011112101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10121111057 - 2¹⁴ = 10121094673 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121111087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060555528 + 5060555529.

It is an arithmetic number, because the mean of its divisors is an integer number (5060555529).

Almost surely, 2^10121111057 is an apocalyptic number.

It is an amenable number.

10121111057 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121111057 is an equidigital number, since it uses as much as digits as its factorization.

10121111057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70, while the sum is 20.

Adding to 10121111057 its reverse (75011112101), we get a palindrome (85132223158).

The spelling of 10121111057 in words is "ten billion, one hundred twenty-one million, one hundred eleven thousand, fifty-seven".