1121022197 has 2 divisors, whose sum is σ = 1121022198. Its totient is φ = 1121022196.

The previous prime is 1121022187. The next prime is 1121022209. The reversal of 1121022197 is 7912201211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780029041 + 340993156 = 27929^2 + 18466^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121022197 - 2²⁸ = 852586741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121022107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560511098 + 560511099.

It is an arithmetic number, because the mean of its divisors is an integer number (560511099).

Almost surely, 2^1121022197 is an apocalyptic number.

It is an amenable number.

1121022197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121022197 is an equidigital number, since it uses as much as digits as its factorization.

1121022197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1121022197 is about 33481.6695670930. The cubic root of 1121022197 is about 1038.8146619154.

The spelling of 1121022197 in words is "one billion, one hundred twenty-one million, twenty-two thousand, one hundred ninety-seven".