121201117 has 2 divisors, whose sum is σ = 121201118. Its totient is φ = 121201116.

The previous prime is 121201051. The next prime is 121201127. The reversal of 121201117 is 711102121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71723961 + 49477156 = 8469^2 + 7034^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201117 - 2¹⁵ = 121168349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121201117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600558 + 60600559.

It is an arithmetic number, because the mean of its divisors is an integer number (60600559).

Almost surely, 2^121201117 is an apocalyptic number.

It is an amenable number.

121201117 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201117 is an equidigital number, since it uses as much as digits as its factorization.

121201117 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.

The square root of 121201117 is about 11009.1378863197. The cubic root of 121201117 is about 494.8826263217.

Adding to 121201117 its reverse (711102121), we get a palindrome (832303238).

The spelling of 121201117 in words is "one hundred twenty-one million, two hundred one thousand, one hundred seventeen".