120312221013 has 24 divisors (see below), whose sum is σ = 186241256448. Its totient is φ = 74647295712.

The previous prime is 120312221011. The next prime is 120312221069. The reversal of 120312221013 is 310122213021.

120312221013 is a `hidden beast` number, since 120 + 312 + 221 + 0 + 13 = 666.

It is not a de Polignac number, because 120312221013 - 2¹ = 120312221011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120312221011) 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 23 ways as a sum of consecutive naturals, for example, 7846645 + ... + 7861962.

It is an arithmetic number, because the mean of its divisors is an integer number (7760052352).

Almost surely, 2^120312221013 is an apocalyptic number.

It is an amenable number.

120312221013 is a deficient number, since it is larger than the sum of its proper divisors (65929035435).

120312221013 is a wasteful number, since it uses less digits than its factorization.

120312221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15708673 (or 15708670 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 120312221013 its reverse (310122213021), we get a palindrome (430434434034).

The spelling of 120312221013 in words is "one hundred twenty billion, three hundred twelve million, two hundred twenty-one thousand, thirteen".