1125421310311 has 2 divisors, whose sum is σ = 1125421310312. Its totient is φ = 1125421310310.

The previous prime is 1125421310303. The next prime is 1125421310381. The reversal of 1125421310311 is 1130131245211.

It is a weak prime.

It is an emirp because it is prime and its reverse (1130131245211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1125421310311 - 2³ = 1125421310303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125421310381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562710655155 + 562710655156.

It is an arithmetic number, because the mean of its divisors is an integer number (562710655156).

Almost surely, 2^{1125421310311} is an apocalyptic number.

1125421310311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125421310311 is an equidigital number, since it uses as much as digits as its factorization.

1125421310311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 1125421310311 its reverse (1130131245211), we get a palindrome (2255552555522).

The spelling of 1125421310311 in words is "one trillion, one hundred twenty-five billion, four hundred twenty-one million, three hundred ten thousand, three hundred eleven".