1121192197 has 2 divisors, whose sum is σ = 1121192198. Its totient is φ = 1121192196.

The previous prime is 1121192179. The next prime is 1121192227. The reversal of 1121192197 is 7912911211.

Together with previous prime (1121192179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 860014276 + 261177921 = 29326^2 + 16161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121192197 - 2¹¹ = 1121190149 is a prime.

It is a super-2 number, since 2×1121192197² = 2514143885227373618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121292197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560596098 + 560596099.

It is an arithmetic number, because the mean of its divisors is an integer number (560596099).

Almost surely, 2^1121192197 is an apocalyptic number.

It is an amenable number.

1121192197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121192197 is an equidigital number, since it uses as much as digits as its factorization.

1121192197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 34.

The square root of 1121192197 is about 33484.2081734062. The cubic root of 1121192197 is about 1038.8671704107.

The spelling of 1121192197 in words is "one billion, one hundred twenty-one million, one hundred ninety-two thousand, one hundred ninety-seven".