1131248590421 has 2 divisors, whose sum is σ = 1131248590422. Its totient is φ = 1131248590420.

The previous prime is 1131248590343. The next prime is 1131248590441. The reversal of 1131248590421 is 1240958421311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129939236196 + 1309354225 = 1062986^2 + 36185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131248590421 - 2³⁴ = 1114068721237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131248590441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565624295210 + 565624295211.

It is an arithmetic number, because the mean of its divisors is an integer number (565624295211).

Almost surely, 2^{1131248590421} is an apocalyptic number.

It is an amenable number.

1131248590421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131248590421 is an equidigital number, since it uses as much as digits as its factorization.

1131248590421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 1131248590421 in words is "one trillion, one hundred thirty-one billion, two hundred forty-eight million, five hundred ninety thousand, four hundred twenty-one".