3120021121212 has 36 divisors (see below), whose sum is σ = 7915191995256. Its totient is φ = 1036252499040.

The previous prime is 3120021121201. The next prime is 3120021121223. The reversal of 3120021121212 is 2121211200213.

3120021121212 is a `hidden beast` number, since 31 + 200 + 211 + 212 + 12 = 666.

3120021121212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3120021121201) and next prime (3120021121223).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156429114 + ... + 156449057.

Almost surely, 2^{3120021121212} is an apocalyptic number.

It is an amenable number.

3120021121212 is an abundant number, since it is smaller than the sum of its proper divisors (4795170874044).

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

3120021121212 is a wasteful number, since it uses less digits than its factorization.

3120021121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312878458 (or 312878453 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 3120021121212 its reverse (2121211200213), we get a palindrome (5241232321425).

The spelling of 3120021121212 in words is "three trillion, one hundred twenty billion, twenty-one million, one hundred twenty-one thousand, two hundred twelve".