1112120221957 has 2 divisors, whose sum is σ = 1112120221958. Its totient is φ = 1112120221956.

The previous prime is 1112120221951. The next prime is 1112120221973. The reversal of 1112120221957 is 7591220212111.

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., 1054090302721 + 58029919236 = 1026689^2 + 240894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112120221957 is a prime.

It is a super-2 number, since 2×1112120221957² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112120221951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556060110978 + 556060110979.

It is an arithmetic number, because the mean of its divisors is an integer number (556060110979).

Almost surely, 2^{1112120221957} is an apocalyptic number.

It is an amenable number.

1112120221957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112120221957 is an equidigital number, since it uses as much as digits as its factorization.

1112120221957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 34.

The spelling of 1112120221957 in words is "one trillion, one hundred twelve billion, one hundred twenty million, two hundred twenty-one thousand, nine hundred fifty-seven".