102212211217 has 2 divisors, whose sum is σ = 102212211218. Its totient is φ = 102212211216.

The previous prime is 102212211089. The next prime is 102212211251. The reversal of 102212211217 is 712112212201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72638874256 + 29573336961 = 269516^2 + 171969^2 .

It is a cyclic number.

It is not a de Polignac number, because 102212211217 - 2⁷ = 102212211089 is a prime.

It is a super-2 number, since 2×102212211217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102212211917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106105608 + 51106105609.

It is an arithmetic number, because the mean of its divisors is an integer number (51106105609).

Almost surely, 2^102212211217 is an apocalyptic number.

It is an amenable number.

102212211217 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212211217 is an equidigital number, since it uses as much as digits as its factorization.

102212211217 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 22.

Adding to 102212211217 its reverse (712112212201), we get a palindrome (814324423418).

The spelling of 102212211217 in words is "one hundred two billion, two hundred twelve million, two hundred eleven thousand, two hundred seventeen".