12021131032220 has 24 divisors (see below), whose sum is σ = 25262419812000. Its totient is φ = 4805015337792.

The previous prime is 12021131032213. The next prime is 12021131032231. The reversal of 12021131032220 is 2223013112021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12021131032192 and 12021131032201.

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, 214788515 + ... + 214844474.

It is an arithmetic number, because the mean of its divisors is an integer number (1052600825500).

Almost surely, 2^{12021131032220} is an apocalyptic number.

12021131032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021131032220 is an abundant number, since it is smaller than the sum of its proper divisors (13241288779780).

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

12021131032220 is a wasteful number, since it uses less digits than its factorization.

12021131032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429634397 (or 429634395 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12021131032220 its reverse (2223013112021), we get a palindrome (14244144144241).

The spelling of 12021131032220 in words is "twelve trillion, twenty-one billion, one hundred thirty-one million, thirty-two thousand, two hundred twenty".