102021120120217 has 2 divisors, whose sum is σ = 102021120120218. Its totient is φ = 102021120120216.

The previous prime is 102021120120211. The next prime is 102021120120223. The reversal of 102021120120217 is 712021021120201.

It is a balanced prime because it is at equal distance from previous prime (102021120120211) and next prime (102021120120223).

It can be written as a sum of positive squares in only one way, i.e., 100165588492176 + 1855531628041 = 10008276^2 + 1362179^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021120120217 - 2³ = 102021120120209 is a prime.

It is not a weakly prime, because it can be changed into another prime (102021120120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010560060108 + 51010560060109.

It is an arithmetic number, because the mean of its divisors is an integer number (51010560060109).

Almost surely, 2^{102021120120217} is an apocalyptic number.

It is an amenable number.

102021120120217 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021120120217 is an equidigital number, since it uses as much as digits as its factorization.

102021120120217 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 102021120120217 its reverse (712021021120201), we get a palindrome (814042141240418).

The spelling of 102021120120217 in words is "one hundred two trillion, twenty-one billion, one hundred twenty million, one hundred twenty thousand, two hundred seventeen".