1322791121 has 2 divisors, whose sum is σ = 1322791122. Its totient is φ = 1322791120.

The previous prime is 1322791109. The next prime is 1322791163. The reversal of 1322791121 is 1211972231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1160356096 + 162435025 = 34064^2 + 12745^2 .

It is an emirp because it is prime and its reverse (1211972231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322791121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1322790121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661395560 + 661395561.

It is an arithmetic number, because the mean of its divisors is an integer number (661395561).

Almost surely, 2^1322791121 is an apocalyptic number.

It is an amenable number.

1322791121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322791121 is an equidigital number, since it uses as much as digits as its factorization.

1322791121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 29.

The square root of 1322791121 is about 36370.1955040112. The cubic root of 1322791121 is about 1097.7339358076.

The spelling of 1322791121 in words is "one billion, three hundred twenty-two million, seven hundred ninety-one thousand, one hundred twenty-one".