120013213212 has 72 divisors (see below), whose sum is σ = 305125731456. Its totient is φ = 39772923264.

The previous prime is 120013213189. The next prime is 120013213217. The reversal of 120013213212 is 212312310021.

120013213212 is a `hidden beast` number, since 1 + 20 + 0 + 1 + 321 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120013213217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6388938 + ... + 6407694.

Almost surely, 2^120013213212 is an apocalyptic number.

120013213212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120013213212 is an abundant number, since it is smaller than the sum of its proper divisors (185112518244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120013213212 is a wasteful number, since it uses less digits than its factorization.

120013213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19787 (or 19782 counting only the distinct ones).

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

Adding to 120013213212 its reverse (212312310021), we get a palindrome (332325523233).

The spelling of 120013213212 in words is "one hundred twenty billion, thirteen million, two hundred thirteen thousand, two hundred twelve".