102220217 has 8 divisors (see below), whose sum is σ = 112365792. Its totient is φ = 92216800.

The previous prime is 102220207. The next prime is 102220231. The reversal of 102220217 is 712022201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102220217 - 2⁸ = 102219961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102220195 and 102220204.

It is not an unprimeable number, because it can be changed into a prime (102220207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34028 + ... + 36909.

It is an arithmetic number, because the mean of its divisors is an integer number (14045724).

Almost surely, 2^102220217 is an apocalyptic number.

It is an amenable number.

102220217 is a deficient number, since it is larger than the sum of its proper divisors (10145575).

102220217 is a wasteful number, since it uses less digits than its factorization.

102220217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71079.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 102220217 is about 10110.4014262541. The cubic root of 102220217 is about 467.5688815355.

Adding to 102220217 its reverse (712022201), we get a palindrome (814242418).

The spelling of 102220217 in words is "one hundred two million, two hundred twenty thousand, two hundred seventeen".