121202017 has 2 divisors, whose sum is σ = 121202018. Its totient is φ = 121202016.

The previous prime is 121201981. The next prime is 121202063. The reversal of 121202017 is 710202121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114041041 + 7160976 = 10679^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 121202017 - 2²³ = 112813409 is a prime.

It is not a weakly prime, because it can be changed into another prime (121202317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601008 + 60601009.

It is an arithmetic number, because the mean of its divisors is an integer number (60601009).

Almost surely, 2^121202017 is an apocalyptic number.

It is an amenable number.

121202017 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202017 is an equidigital number, since it uses as much as digits as its factorization.

121202017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 121202017 is about 11009.1787613791. The cubic root of 121202017 is about 494.8838512643.

Adding to 121202017 its reverse (710202121), we get a palindrome (831404138).

The spelling of 121202017 in words is "one hundred twenty-one million, two hundred two thousand, seventeen".