12120212112012 has 36 divisors (see below), whose sum is σ = 30637417457920. Its totient is φ = 4040042402592.

The previous prime is 12120212112011. The next prime is 12120212112031. The reversal of 12120212112012 is 21021121202121.

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 not an unprimeable number, because it can be changed into a prime (12120212112011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4391733 + ... + 6597555.

Almost surely, 2^{12120212112012} is an apocalyptic number.

12120212112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12120212112012 is an abundant number, since it is smaller than the sum of its proper divisors (18517205345908).

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

12120212112012 is a wasteful number, since it uses less digits than its factorization.

12120212112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358462 (or 2358457 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12120212112012 its reverse (21021121202121), we get a palindrome (33141333314133).

The spelling of 12120212112012 in words is "twelve trillion, one hundred twenty billion, two hundred twelve million, one hundred twelve thousand, twelve".