11110222111997 has 2 divisors, whose sum is σ = 11110222111998. Its totient is φ = 11110222111996.

The previous prime is 11110222111979. The next prime is 11110222112021. The reversal of 11110222111997 is 79911122201111.

It is a happy number.

Together with previous prime (11110222111979) 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., 7521997375876 + 3588224736121 = 2742626^2 + 1894261^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110222111997 - 2²⁰ = 11110221063421 is a prime.

It is a super-2 number, since 2×11110222111997² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11110222111997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11110222111897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555111055998 + 5555111055999.

It is an arithmetic number, because the mean of its divisors is an integer number (5555111055999).

Almost surely, 2^{11110222111997} is an apocalyptic number.

It is an amenable number.

11110222111997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110222111997 is an equidigital number, since it uses as much as digits as its factorization.

11110222111997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 38.

The spelling of 11110222111997 in words is "eleven trillion, one hundred ten billion, two hundred twenty-two million, one hundred eleven thousand, nine hundred ninety-seven".