12012311124220 has 24 divisors (see below), whose sum is σ = 27519112757808. Its totient is φ = 4368113136000.

The previous prime is 12012311124193. The next prime is 12012311124299. The reversal of 12012311124220 is 2242111321021.

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

It is a junction number, because it is equal to n+sod(n) for n = 12012311124191 and 12012311124200.

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, 27300706881 + ... + 27300707320.

It is an arithmetic number, because the mean of its divisors is an integer number (1146629698242).

Almost surely, 2^{12012311124220} is an apocalyptic number.

12012311124220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012311124220 is an abundant number, since it is smaller than the sum of its proper divisors (15506801633588).

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

12012311124220 is a wasteful number, since it uses less digits than its factorization.

12012311124220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54601414221 (or 54601414219 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12012311124220 its reverse (2242111321021), we get a palindrome (14254422445241).

The spelling of 12012311124220 in words is "twelve trillion, twelve billion, three hundred eleven million, one hundred twenty-four thousand, two hundred twenty".