102212417 has 2 divisors, whose sum is σ = 102212418. Its totient is φ = 102212416.

The previous prime is 102212387. The next prime is 102212423. The reversal of 102212417 is 714212201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55413136 + 46799281 = 7444^2 + 6841^2 .

It is a cyclic number.

It is not a de Polignac number, because 102212417 - 2¹⁴ = 102196033 is a prime.

It is not a weakly prime, because it can be changed into another prime (102215417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106208 + 51106209.

It is an arithmetic number, because the mean of its divisors is an integer number (51106209).

Almost surely, 2^102212417 is an apocalyptic number.

It is an amenable number.

102212417 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212417 is an equidigital number, since it uses as much as digits as its factorization.

102212417 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 20.

The square root of 102212417 is about 10110.0156775348. The cubic root of 102212417 is about 467.5569884868.

Adding to 102212417 its reverse (714212201), we get a palindrome (816424618).

The spelling of 102212417 in words is "one hundred two million, two hundred twelve thousand, four hundred seventeen".