12012111211122 has 96 divisors (see below), whose sum is σ = 29701322352000. Its totient is φ = 3475026213120.

The previous prime is 12012111211117. The next prime is 12012111211183. The reversal of 12012111211122 is 22111211121021.

It is a happy number.

12012111211122 is a `hidden beast` number, since 120 + 1 + 211 + 1 + 211 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12012111211095 and 12012111211104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11241622 + ... + 12263697.

It is an arithmetic number, because the mean of its divisors is an integer number (309388774500).

Almost surely, 2^{12012111211122} is an apocalyptic number.

12012111211122 is an abundant number, since it is smaller than the sum of its proper divisors (17689211140878).

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

12012111211122 is a wasteful number, since it uses less digits than its factorization.

12012111211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23505456 (or 23505453 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12012111211122 its reverse (22111211121021), we get a palindrome (34123322332143).

The spelling of 12012111211122 in words is "twelve trillion, twelve billion, one hundred eleven million, two hundred eleven thousand, one hundred twenty-two".