120641521 has 32 divisors (see below), whose sum is σ = 163086336. Its totient is φ = 86184000.

The previous prime is 120641501. The next prime is 120641581. The reversal of 120641521 is 125146021.

It is not a de Polignac number, because 120641521 - 2⁹ = 120641009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120641492 and 120641501.

It is not an unprimeable number, because it can be changed into a prime (120641501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190876 + ... + 191506.

It is an arithmetic number, because the mean of its divisors is an integer number (5096448).

Almost surely, 2^120641521 is an apocalyptic number.

120641521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120641521 is a deficient number, since it is larger than the sum of its proper divisors (42444815).

120641521 is a wasteful number, since it uses less digits than its factorization.

120641521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 120641521 is about 10983.6934134197. The cubic root of 120641521 is about 494.1198125469.

Adding to 120641521 its reverse (125146021), we get a palindrome (245787542).

The spelling of 120641521 in words is "one hundred twenty million, six hundred forty-one thousand, five hundred twenty-one".