1150221050557 has 2 divisors, whose sum is σ = 1150221050558. Its totient is φ = 1150221050556.

The previous prime is 1150221050501. The next prime is 1150221050599. The reversal of 1150221050557 is 7550501220511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 921425288281 + 228795762276 = 959909^2 + 478326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1150221050557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1150221053557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575110525278 + 575110525279.

It is an arithmetic number, because the mean of its divisors is an integer number (575110525279).

Almost surely, 2^{1150221050557} is an apocalyptic number.

It is an amenable number.

1150221050557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150221050557 is an equidigital number, since it uses as much as digits as its factorization.

1150221050557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17500, while the sum is 34.

The spelling of 1150221050557 in words is "one trillion, one hundred fifty billion, two hundred twenty-one million, fifty thousand, five hundred fifty-seven".