121001210017 has 2 divisors, whose sum is σ = 121001210018. Its totient is φ = 121001210016.

The previous prime is 121001209999. The next prime is 121001210023. The reversal of 121001210017 is 710012100121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85675631616 + 35325578401 = 292704^2 + 187951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001210017 is a prime.

It is a super-2 number, since 2×121001210017² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121001210027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500605008 + 60500605009.

It is an arithmetic number, because the mean of its divisors is an integer number (60500605009).

Almost surely, 2^121001210017 is an apocalyptic number.

It is an amenable number.

121001210017 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001210017 is an equidigital number, since it uses as much as digits as its factorization.

121001210017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 121001210017 its reverse (710012100121), we get a palindrome (831013310138).

The spelling of 121001210017 in words is "one hundred twenty-one billion, one million, two hundred ten thousand, seventeen".