12012111122212 has 12 divisors (see below), whose sum is σ = 21021608451676. Its totient is φ = 6005937278880.

The previous prime is 12012111122197. The next prime is 12012111122213. The reversal of 12012111122212 is 21222111121021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11962232153316 + 49878968896 = 3458646^2 + 223336^2 .

It is a super-2 number, since 2×12012111122212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12012111122212.

It is not an unprimeable number, because it can be changed into a prime (12012111122213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29341863 + ... + 29748430.

Almost surely, 2^{12012111122212} is an apocalyptic number.

It is an amenable number.

12012111122212 is a deficient number, since it is larger than the sum of its proper divisors (9009497329464).

12012111122212 is a wasteful number, since it uses less digits than its factorization.

12012111122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59141118 (or 59141116 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12012111122212 its reverse (21222111121021), we get a palindrome (33234222243233).

The spelling of 12012111122212 in words is "twelve trillion, twelve billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twelve".