1121001199957 has 2 divisors, whose sum is σ = 1121001199958. Its totient is φ = 1121001199956.

The previous prime is 1121001199943. The next prime is 1121001199987. The reversal of 1121001199957 is 7599911001211.

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., 743895900036 + 377105299921 = 862494^2 + 614089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121001199957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121001199987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560500599978 + 560500599979.

It is an arithmetic number, because the mean of its divisors is an integer number (560500599979).

Almost surely, 2^{1121001199957} is an apocalyptic number.

It is an amenable number.

1121001199957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121001199957 is an equidigital number, since it uses as much as digits as its factorization.

1121001199957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 46.

The spelling of 1121001199957 in words is "one trillion, one hundred twenty-one billion, one million, one hundred ninety-nine thousand, nine hundred fifty-seven".