20113222097 has 2 divisors, whose sum is σ = 20113222098. Its totient is φ = 20113222096.

The previous prime is 20113222079. The next prime is 20113222117. The reversal of 20113222097 is 79022231102.

Together with previous prime (20113222079) 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., 19101727681 + 1011494416 = 138209^2 + 31804^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113222097 - 2⁸ = 20113221841 is a prime.

It is not a weakly prime, because it can be changed into another prime (20113224097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056611048 + 10056611049.

It is an arithmetic number, because the mean of its divisors is an integer number (10056611049).

Almost surely, 2^20113222097 is an apocalyptic number.

It is an amenable number.

20113222097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113222097 is an equidigital number, since it uses as much as digits as its factorization.

20113222097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 20113222097 its reverse (79022231102), we get a palindrome (99135453199).

The spelling of 20113222097 in words is "twenty billion, one hundred thirteen million, two hundred twenty-two thousand, ninety-seven".