12001022331220 has 96 divisors (see below), whose sum is σ = 28024656823296. Its totient is φ = 4286924697600.

The previous prime is 12001022331203. The next prime is 12001022331289. The reversal of 12001022331220 is 2213322010021.

It is a super-2 number, since 2×12001022331220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26949412 + ... + 27391108.

It is an arithmetic number, because the mean of its divisors is an integer number (291923508576).

Almost surely, 2^{12001022331220} is an apocalyptic number.

12001022331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12001022331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14012328411648).

12001022331220 is an abundant number, since it is smaller than the sum of its proper divisors (16023634492076).

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

12001022331220 is a wasteful number, since it uses less digits than its factorization.

12001022331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445121 (or 445119 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12001022331220 its reverse (2213322010021), we get a palindrome (14214344341241).

The spelling of 12001022331220 in words is "twelve trillion, one billion, twenty-two million, three hundred thirty-one thousand, two hundred twenty".