1196312921 has 2 divisors, whose sum is σ = 1196312922. Its totient is φ = 1196312920.

The previous prime is 1196312911. The next prime is 1196312981. The reversal of 1196312921 is 1292136911.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 850538896 + 345774025 = 29164^2 + 18595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1196312921 - 2¹⁸ = 1196050777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1196312911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598156460 + 598156461.

It is an arithmetic number, because the mean of its divisors is an integer number (598156461).

Almost surely, 2^1196312921 is an apocalyptic number.

It is an amenable number.

1196312921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1196312921 is an equidigital number, since it uses as much as digits as its factorization.

1196312921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 35.

The square root of 1196312921 is about 34587.7568078648. The cubic root of 1196312921 is about 1061.5690897831.

The spelling of 1196312921 in words is "one billion, one hundred ninety-six million, three hundred twelve thousand, nine hundred twenty-one".