22111112212117 has 2 divisors, whose sum is σ = 22111112212118. Its totient is φ = 22111112212116.

The previous prime is 22111112212081. The next prime is 22111112212121. The reversal of 22111112212117 is 71121221111122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14168855335716 + 7942256876401 = 3764154^2 + 2818201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22111112212117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22111112212091 and 22111112212100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111112282117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055556106058 + 11055556106059.

It is an arithmetic number, because the mean of its divisors is an integer number (11055556106059).

Almost surely, 2^{22111112212117} is an apocalyptic number.

It is an amenable number.

22111112212117 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111112212117 is an equidigital number, since it uses as much as digits as its factorization.

22111112212117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 25.

Adding to 22111112212117 its reverse (71121221111122), we get a palindrome (93232333323239).

The spelling of 22111112212117 in words is "twenty-two trillion, one hundred eleven billion, one hundred twelve million, two hundred twelve thousand, one hundred seventeen".