120121247 has 2 divisors, whose sum is σ = 120121248. Its totient is φ = 120121246.

The previous prime is 120121241. The next prime is 120121301. The reversal of 120121247 is 742121021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120121247 - 2¹⁶ = 120055711 is a prime.

It is a super-2 number, since 2×120121247² = 28858227961670018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120121241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060623 + 60060624.

It is an arithmetic number, because the mean of its divisors is an integer number (60060624).

Almost surely, 2^120121247 is an apocalyptic number.

120121247 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121247 is an equidigital number, since it uses as much as digits as its factorization.

120121247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 120121247 is about 10959.9838959736. The cubic root of 120121247 is about 493.4084816230.

Adding to 120121247 its reverse (742121021), we get a palindrome (862242268).

The spelling of 120121247 in words is "one hundred twenty million, one hundred twenty-one thousand, two hundred forty-seven".