1121200219957 has 2 divisors, whose sum is σ = 1121200219958. Its totient is φ = 1121200219956.

The previous prime is 1121200219889. The next prime is 1121200220017. The reversal of 1121200219957 is 7599120021211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 996784588881 + 124415631076 = 998391^2 + 352726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121200219957 - 2¹¹ = 1121200217909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121200219157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560600109978 + 560600109979.

It is an arithmetic number, because the mean of its divisors is an integer number (560600109979).

Almost surely, 2^{1121200219957} is an apocalyptic number.

It is an amenable number.

1121200219957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121200219957 is an equidigital number, since it uses as much as digits as its factorization.

1121200219957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 40.

The spelling of 1121200219957 in words is "one trillion, one hundred twenty-one billion, two hundred million, two hundred nineteen thousand, nine hundred fifty-seven".