1121220112057 has 2 divisors, whose sum is σ = 1121220112058. Its totient is φ = 1121220112056.

The previous prime is 1121220112031. The next prime is 1121220112069. The reversal of 1121220112057 is 7502110221211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1115919689641 + 5300422416 = 1056371^2 + 72804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121220112057 is a prime.

It is a super-2 number, since 2×1121220112057² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121220112357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560610056028 + 560610056029.

It is an arithmetic number, because the mean of its divisors is an integer number (560610056029).

Almost surely, 2^{1121220112057} is an apocalyptic number.

It is an amenable number.

1121220112057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121220112057 is an equidigital number, since it uses as much as digits as its factorization.

1121220112057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 25.

Adding to 1121220112057 its reverse (7502110221211), we get a palindrome (8623330333268).

The spelling of 1121220112057 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twelve thousand, fifty-seven".