120312120213 has 6 divisors (see below), whose sum is σ = 173784173654. Its totient is φ = 80208080136.

The previous prime is 120312120157. The next prime is 120312120239. The reversal of 120312120213 is 312021213021.

120312120213 is a `hidden beast` number, since 1 + 20 + 312 + 120 + 213 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87819173649 + 32492946564 = 296343^2 + 180258^2 .

It is not a de Polignac number, because 120312120213 - 2¹⁷ = 120311989141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120312120013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6684006670 + ... + 6684006687.

Almost surely, 2^120312120213 is an apocalyptic number.

It is an amenable number.

120312120213 is a deficient number, since it is larger than the sum of its proper divisors (53472053441).

120312120213 is a wasteful number, since it uses less digits than its factorization.

120312120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13368013363 (or 13368013360 counting only the distinct ones).

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

Adding to 120312120213 its reverse (312021213021), we get a palindrome (432333333234).

The spelling of 120312120213 in words is "one hundred twenty billion, three hundred twelve million, one hundred twenty thousand, two hundred thirteen".