120121523 has 2 divisors, whose sum is σ = 120121524. Its totient is φ = 120121522.

The previous prime is 120121511. The next prime is 120121531. The reversal of 120121523 is 325121021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120121523 - 2¹⁸ = 119859379 is a prime.

It is not a weakly prime, because it can be changed into another prime (120121123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060761 + 60060762.

It is an arithmetic number, because the mean of its divisors is an integer number (60060762).

Almost surely, 2^120121523 is an apocalyptic number.

120121523 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121523 is an equidigital number, since it uses as much as digits as its factorization.

120121523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 120121523 is about 10959.9964872257. The cubic root of 120121523 is about 493.4088595208.

Adding to 120121523 its reverse (325121021), we get a palindrome (445242544).

The spelling of 120121523 in words is "one hundred twenty million, one hundred twenty-one thousand, five hundred twenty-three".