111102121111897 has 2 divisors, whose sum is σ = 111102121111898. Its totient is φ = 111102121111896.

The previous prime is 111102121111879. The next prime is 111102121112011. The reversal of 111102121111897 is 798111121201111.

Together with previous prime (111102121111879) 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., 110155604214016 + 946516897881 = 10495504^2 + 972891^2 .

It is a cyclic number.

It is not a de Polignac number, because 111102121111897 - 2⁷ = 111102121111769 is a prime.

It is not a weakly prime, because it can be changed into another prime (111102121111867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55551060555948 + 55551060555949.

It is an arithmetic number, because the mean of its divisors is an integer number (55551060555949).

Almost surely, 2^{111102121111897} is an apocalyptic number.

It is an amenable number.

111102121111897 is a deficient number, since it is larger than the sum of its proper divisors (1).

111102121111897 is an equidigital number, since it uses as much as digits as its factorization.

111102121111897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 37.

The spelling of 111102121111897 in words is "one hundred eleven trillion, one hundred two billion, one hundred twenty-one million, one hundred eleven thousand, eight hundred ninety-seven".