22011212202197 has 2 divisors, whose sum is σ = 22011212202198. Its totient is φ = 22011212202196.

The previous prime is 22011212202179. The next prime is 22011212202229. The reversal of 22011212202197 is 79120221211022.

Together with previous prime (22011212202179) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (22011212202229) can be obtained adding 22011212202197 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15034804620676 + 6976407581521 = 3877474^2 + 2641289^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011212202197 - 2⁸ = 22011212201941 is a prime.

It is a super-2 number, since 2×22011212202197² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011212202107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005606101098 + 11005606101099.

It is an arithmetic number, because the mean of its divisors is an integer number (11005606101099).

Almost surely, 2^{22011212202197} is an apocalyptic number.

It is an amenable number.

22011212202197 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011212202197 is an equidigital number, since it uses as much as digits as its factorization.

22011212202197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 22011212202197 in words is "twenty-two trillion, eleven billion, two hundred twelve million, two hundred two thousand, one hundred ninety-seven".