11102021057 has 2 divisors, whose sum is σ = 11102021058. Its totient is φ = 11102021056.

The previous prime is 11102021023. The next prime is 11102021093. The reversal of 11102021057 is 75012020111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6091646401 + 5010374656 = 78049^2 + 70784^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102021057 - 2¹⁶ = 11101955521 is a prime.

It is not a weakly prime, because it can be changed into another prime (11102011057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551010528 + 5551010529.

It is an arithmetic number, because the mean of its divisors is an integer number (5551010529).

Almost surely, 2^11102021057 is an apocalyptic number.

It is an amenable number.

11102021057 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102021057 is an equidigital number, since it uses as much as digits as its factorization.

11102021057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 20.

Adding to 11102021057 its reverse (75012020111), we get a palindrome (86114041168).

The spelling of 11102021057 in words is "eleven billion, one hundred two million, twenty-one thousand, fifty-seven".