120015021515 has 8 divisors (see below), whose sum is σ = 144192175920. Its totient is φ = 95895917152.

The previous prime is 120015021491. The next prime is 120015021571. The reversal of 120015021515 is 515120510021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120015021515 - 2¹⁰ = 120015020491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14507960 + ... + 14516229.

It is an arithmetic number, because the mean of its divisors is an integer number (18024021990).

Almost surely, 2^120015021515 is an apocalyptic number.

120015021515 is a deficient number, since it is larger than the sum of its proper divisors (24177154405).

120015021515 is an equidigital number, since it uses as much as digits as its factorization.

120015021515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29025021.

The product of its (nonzero) digits is 500, while the sum is 23.

Adding to 120015021515 its reverse (515120510021), we get a palindrome (635135531536).

The spelling of 120015021515 in words is "one hundred twenty billion, fifteen million, twenty-one thousand, five hundred fifteen".