121289417 has 2 divisors, whose sum is σ = 121289418. Its totient is φ = 121289416.

The previous prime is 121289383. The next prime is 121289431. The reversal of 121289417 is 714982121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106110601 + 15178816 = 10301^2 + 3896^2 .

It is a cyclic number.

It is not a de Polignac number, because 121289417 - 2⁶ = 121289353 is a prime.

It is a super-2 number, since 2×121289417² = 29422245352399778, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121289437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60644708 + 60644709.

It is an arithmetic number, because the mean of its divisors is an integer number (60644709).

Almost surely, 2^121289417 is an apocalyptic number.

It is an amenable number.

121289417 is a deficient number, since it is larger than the sum of its proper divisors (1).

121289417 is an equidigital number, since it uses as much as digits as its factorization.

121289417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The square root of 121289417 is about 11013.1474611030. The cubic root of 121289417 is about 495.0027779322.

The spelling of 121289417 in words is "one hundred twenty-one million, two hundred eighty-nine thousand, four hundred seventeen".