102122217 has 12 divisors (see below), whose sum is σ = 147925440. Its totient is φ = 67889688.

The previous prime is 102122203. The next prime is 102122219. The reversal of 102122217 is 712221201.

It is a happy number.

It is not a de Polignac number, because 102122217 - 2⁴ = 102122201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102122217.

It is not an unprimeable number, because it can be changed into a prime (102122219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12573 + ... + 19034.

It is an arithmetic number, because the mean of its divisors is an integer number (12327120).

Almost surely, 2^102122217 is an apocalyptic number.

It is an amenable number.

102122217 is a deficient number, since it is larger than the sum of its proper divisors (45803223).

102122217 is a wasteful number, since it uses less digits than its factorization.

102122217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31972 (or 31969 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 102122217 is about 10105.5537700811. The cubic root of 102122217 is about 467.4194120768.

Adding to 102122217 its reverse (712221201), we get a palindrome (814343418).

The spelling of 102122217 in words is "one hundred two million, one hundred twenty-two thousand, two hundred seventeen".