1121666430427 has 2 divisors, whose sum is σ = 1121666430428. Its totient is φ = 1121666430426.

The previous prime is 1121666430419. The next prime is 1121666430431. The reversal of 1121666430427 is 7240346661211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121666430427 - 2³ = 1121666430419 is a prime.

It is a super-2 number, since 2×1121666430427² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121666430487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560833215213 + 560833215214.

It is an arithmetic number, because the mean of its divisors is an integer number (560833215214).

Almost surely, 2^{1121666430427} is an apocalyptic number.

1121666430427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121666430427 is an equidigital number, since it uses as much as digits as its factorization.

1121666430427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 1121666430427 in words is "one trillion, one hundred twenty-one billion, six hundred sixty-six million, four hundred thirty thousand, four hundred twenty-seven".