1121943192457 has 2 divisors, whose sum is σ = 1121943192458. Its totient is φ = 1121943192456.

The previous prime is 1121943192451. The next prime is 1121943192529. The reversal of 1121943192457 is 7542913491211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1103012459536 + 18930732921 = 1050244^2 + 137589^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121943192457 - 2³ = 1121943192449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121943192457.

It is not a weakly prime, because it can be changed into another prime (1121943192451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560971596228 + 560971596229.

It is an arithmetic number, because the mean of its divisors is an integer number (560971596229).

Almost surely, 2^{1121943192457} is an apocalyptic number.

It is an amenable number.

1121943192457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121943192457 is an equidigital number, since it uses as much as digits as its factorization.

1121943192457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The spelling of 1121943192457 in words is "one trillion, one hundred twenty-one billion, nine hundred forty-three million, one hundred ninety-two thousand, four hundred fifty-seven".