1121144440397 has 2 divisors, whose sum is σ = 1121144440398. Its totient is φ = 1121144440396.

The previous prime is 1121144440321. The next prime is 1121144440447. The reversal of 1121144440397 is 7930444411211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 831340944841 + 289803495556 = 911779^2 + 538334^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121144440397 - 2¹² = 1121144436301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121144490397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560572220198 + 560572220199.

It is an arithmetic number, because the mean of its divisors is an integer number (560572220199).

Almost surely, 2^{1121144440397} is an apocalyptic number.

It is an amenable number.

1121144440397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121144440397 is an equidigital number, since it uses as much as digits as its factorization.

1121144440397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 1121144440397 in words is "one trillion, one hundred twenty-one billion, one hundred forty-four million, four hundred forty thousand, three hundred ninety-seven".