12011331111212 has 48 divisors (see below), whose sum is σ = 22164928262400. Its totient is φ = 5684141770560.

The previous prime is 12011331111193. The next prime is 12011331111271. The reversal of 12011331111212 is 21211113311021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6600287 + ... + 8221097.

It is an arithmetic number, because the mean of its divisors is an integer number (461769338800).

Almost surely, 2^{12011331111212} is an apocalyptic number.

It is an amenable number.

12011331111212 is a deficient number, since it is larger than the sum of its proper divisors (10153597151188).

12011331111212 is a wasteful number, since it uses less digits than its factorization.

12011331111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621686 (or 1621684 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 12011331111212 its reverse (21211113311021), we get a palindrome (33222444422233).

The spelling of 12011331111212 in words is "twelve trillion, eleven billion, three hundred thirty-one million, one hundred eleven thousand, two hundred twelve".