120501621 has 8 divisors (see below), whose sum is σ = 178520960. Its totient is φ = 80334396.

The previous prime is 120501617. The next prime is 120501671. The reversal of 120501621 is 126105021.

It is not a de Polignac number, because 120501621 - 2² = 120501617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120501594 and 120501603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120501671) 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 in 7 ways as a sum of consecutive naturals, for example, 2231485 + ... + 2231538.

It is an arithmetic number, because the mean of its divisors is an integer number (22315120).

Almost surely, 2^120501621 is an apocalyptic number.

It is an amenable number.

120501621 is a deficient number, since it is larger than the sum of its proper divisors (58019339).

120501621 is an equidigital number, since it uses as much as digits as its factorization.

120501621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4463032 (or 4463026 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 120501621 is about 10977.3230343285. The cubic root of 120501621 is about 493.9287393044.

Adding to 120501621 its reverse (126105021), we get a palindrome (246606642).

The spelling of 120501621 in words is "one hundred twenty million, five hundred one thousand, six hundred twenty-one".