22111210012217 has 2 divisors, whose sum is σ = 22111210012218. Its totient is φ = 22111210012216.

The previous prime is 22111210012189. The next prime is 22111210012349. The reversal of 22111210012217 is 71221001211122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13234600167721 + 8876609844496 = 3637939^2 + 2979364^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111210012217 - 2¹⁰ = 22111210011193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22111210012192 and 22111210012201.

It is not a weakly prime, because it can be changed into another prime (22111110012217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055605006108 + 11055605006109.

It is an arithmetic number, because the mean of its divisors is an integer number (11055605006109).

Almost surely, 2^{22111210012217} is an apocalyptic number.

It is an amenable number.

22111210012217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111210012217 is an equidigital number, since it uses as much as digits as its factorization.

22111210012217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 22111210012217 its reverse (71221001211122), we get a palindrome (93332211223339).

The spelling of 22111210012217 in words is "twenty-two trillion, one hundred eleven billion, two hundred ten million, twelve thousand, two hundred seventeen".