1121320139 has 2 divisors, whose sum is σ = 1121320140. Its totient is φ = 1121320138.

The previous prime is 1121320129. The next prime is 1121320147. The reversal of 1121320139 is 9310231211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121320139 - 2⁸ = 1121319883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121320129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560660069 + 560660070.

It is an arithmetic number, because the mean of its divisors is an integer number (560660070).

Almost surely, 2^1121320139 is an apocalyptic number.

1121320139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121320139 is an equidigital number, since it uses as much as digits as its factorization.

1121320139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1121320139 is about 33486.1186015937. The cubic root of 1121320139 is about 1038.9066848040.

The spelling of 1121320139 in words is "one billion, one hundred twenty-one million, three hundred twenty thousand, one hundred thirty-nine".