12011112222212 has 24 divisors (see below), whose sum is σ = 21577894980096. Its totient is φ = 5847323493888.

The previous prime is 12011112222157. The next prime is 12011112222251. The reversal of 12011112222212 is 21222221111021.

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, 165478988 + ... + 165551555.

It is an arithmetic number, because the mean of its divisors is an integer number (899078957504).

Almost surely, 2^{12011112222212} is an apocalyptic number.

It is an amenable number.

12011112222212 is a deficient number, since it is larger than the sum of its proper divisors (9566782757884).

12011112222212 is a wasteful number, since it uses less digits than its factorization.

12011112222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331030787 (or 331030785 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12011112222212 its reverse (21222221111021), we get a palindrome (33233333333233).

The spelling of 12011112222212 in words is "twelve trillion, eleven billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twelve".