120201615 has 48 divisors (see below), whose sum is σ = 214812000. Its totient is φ = 62150400.

The previous prime is 120201589. The next prime is 120201617. The reversal of 120201615 is 516102021.

It is not a de Polignac number, because 120201615 - 2⁵ = 120201583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120201617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240636 + ... + 241134.

It is an arithmetic number, because the mean of its divisors is an integer number (4475250).

Almost surely, 2^120201615 is an apocalyptic number.

120201615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120201615 is a deficient number, since it is larger than the sum of its proper divisors (94610385).

120201615 is a wasteful number, since it uses less digits than its factorization.

120201615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 661 counting only the distinct ones).

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

The square root of 120201615 is about 10963.6497116608. The cubic root of 120201615 is about 493.5184966106.

Adding to 120201615 its reverse (516102021), we get a palindrome (636303636).

The spelling of 120201615 in words is "one hundred twenty million, two hundred one thousand, six hundred fifteen".