11131222097 has 2 divisors, whose sum is σ = 11131222098. Its totient is φ = 11131222096.

The previous prime is 11131222087. The next prime is 11131222129. The reversal of 11131222097 is 79022213111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11036763136 + 94458961 = 105056^2 + 9719^2 .

It is a cyclic number.

It is not a de Polignac number, because 11131222097 - 2⁶ = 11131222033 is a prime.

It is not a weakly prime, because it can be changed into another prime (11131222007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565611048 + 5565611049.

It is an arithmetic number, because the mean of its divisors is an integer number (5565611049).

Almost surely, 2^11131222097 is an apocalyptic number.

It is an amenable number.

11131222097 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131222097 is an equidigital number, since it uses as much as digits as its factorization.

11131222097 is an evil number, because the sum of its binary digits is even.

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

The spelling of 11131222097 in words is "eleven billion, one hundred thirty-one million, two hundred twenty-two thousand, ninety-seven".