12012020221122 has 48 divisors (see below), whose sum is σ = 26865993173760. Its totient is φ = 3874787604000.

The previous prime is 12012020221063. The next prime is 12012020221127. The reversal of 12012020221122 is 22112202021021.

It is a happy number.

12012020221122 is a `hidden beast` number, since 120 + 1 + 202 + 0 + 221 + 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 = 12012020221095 and 12012020221104.

It is not an unprimeable number, because it can be changed into a prime (12012020221127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53488872 + ... + 53712972.

It is an arithmetic number, because the mean of its divisors is an integer number (559708191120).

Almost surely, 2^{12012020221122} is an apocalyptic number.

12012020221122 is an abundant number, since it is smaller than the sum of its proper divisors (14853972952638).

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

12012020221122 is a wasteful number, since it uses less digits than its factorization.

12012020221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320199 (or 320196 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12012020221122 its reverse (22112202021021), we get a palindrome (34124222242143).

The spelling of 12012020221122 in words is "twelve trillion, twelve billion, twenty million, two hundred twenty-one thousand, one hundred twenty-two".