120015021 has 32 divisors (see below), whose sum is σ = 193628160. Its totient is φ = 64661184.

The previous prime is 120014969. The next prime is 120015031. The reversal of 120015021 is 120510021.

It is not a de Polignac number, because 120015021 - 2¹⁰ = 120013997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120014988 and 120015006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120015031) 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, 23896 + ... + 28478.

It is an arithmetic number, because the mean of its divisors is an integer number (6050880).

Almost surely, 2^120015021 is an apocalyptic number.

It is an amenable number.

120015021 is a deficient number, since it is larger than the sum of its proper divisors (73613139).

120015021 is a wasteful number, since it uses less digits than its factorization.

120015021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 120015021 is about 10955.1367403607. The cubic root of 120015021 is about 493.2629945472.

Adding to 120015021 its reverse (120510021), we get a palindrome (240525042).

The spelling of 120015021 in words is "one hundred twenty million, fifteen thousand, twenty-one".