12001121333212 has 24 divisors (see below), whose sum is σ = 22912728531840. Its totient is φ = 5454698747760.

The previous prime is 12001121333141. The next prime is 12001121333231. The reversal of 12001121333212 is 21233312110021.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8228398 + ... + 9576469.

It is an arithmetic number, because the mean of its divisors is an integer number (954697022160).

Almost surely, 2^{12001121333212} is an apocalyptic number.

It is an amenable number.

12001121333212 is a deficient number, since it is larger than the sum of its proper divisors (10911607198628).

12001121333212 is a wasteful number, since it uses less digits than its factorization.

12001121333212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17820201 (or 17820199 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12001121333212 its reverse (21233312110021), we get a palindrome (33234433443233).

The spelling of 12001121333212 in words is "twelve trillion, one billion, one hundred twenty-one million, three hundred thirty-three thousand, two hundred twelve".