1112121199957 has 2 divisors, whose sum is σ = 1112121199958. Its totient is φ = 1112121199956.

The previous prime is 1112121199913. The next prime is 1112121200017. The reversal of 1112121199957 is 7599911212111.

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., 1096273914961 + 15847284996 = 1047031^2 + 125886^2 .

It is an emirp because it is prime and its reverse (7599911212111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112121199957 - 2¹⁹ = 1112120675669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1112121199957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112121199907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556060599978 + 556060599979.

It is an arithmetic number, because the mean of its divisors is an integer number (556060599979).

Almost surely, 2^{1112121199957} is an apocalyptic number.

It is an amenable number.

1112121199957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112121199957 is an equidigital number, since it uses as much as digits as its factorization.

1112121199957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 49.

The spelling of 1112121199957 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred ninety-nine thousand, nine hundred fifty-seven".