120117251 has 2 divisors, whose sum is σ = 120117252. Its totient is φ = 120117250.

The previous prime is 120117241. The next prime is 120117253. The reversal of 120117251 is 152711021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120117251 - 2¹⁴ = 120100867 is a prime.

Together with 120117253, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 120117251 parts by 15499 straight cuts.

It is not a weakly prime, because it can be changed into another prime (120117253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60058625 + 60058626.

It is an arithmetic number, because the mean of its divisors is an integer number (60058626).

Almost surely, 2^120117251 is an apocalyptic number.

120117251 is a deficient number, since it is larger than the sum of its proper divisors (1).

120117251 is an equidigital number, since it uses as much as digits as its factorization.

120117251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 120117251 is about 10959.8015949195. The cubic root of 120117251 is about 493.4030102564.

Adding to 120117251 its reverse (152711021), we get a palindrome (272828272).

The spelling of 120117251 in words is "one hundred twenty million, one hundred seventeen thousand, two hundred fifty-one".