1197100999 has 2 divisors, whose sum is σ = 1197101000. Its totient is φ = 1197100998.

The previous prime is 1197100969. The next prime is 1197101011. The reversal of 1197100999 is 9990017911.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1197100999 - 2¹¹ = 1197098951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197100969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598550499 + 598550500.

It is an arithmetic number, because the mean of its divisors is an integer number (598550500).

Almost surely, 2^1197100999 is an apocalyptic number.

1197100999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197100999 is an equidigital number, since it uses as much as digits as its factorization.

1197100999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 46.

The square root of 1197100999 is about 34599.1473738877. The cubic root of 1197100999 is about 1061.8021435248.

The spelling of 1197100999 in words is "one billion, one hundred ninety-seven million, one hundred thousand, nine hundred ninety-nine".