12021232012220 has 12 divisors (see below), whose sum is σ = 25244587225704. Its totient is φ = 4808492804880.

The previous prime is 12021232012169. The next prime is 12021232012247. The reversal of 12021232012220 is 2221023212021.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 601061600611 = 12021232012220 / (1 + 2 + 0 + 2 + 1 + 2 + 3 + 2 + 0 + 1 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 12021232012192 and 12021232012201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300530800286 + ... + 300530800325.

It is an arithmetic number, because the mean of its divisors is an integer number (2103715602142).

Almost surely, 2^{12021232012220} is an apocalyptic number.

12021232012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021232012220 is an abundant number, since it is smaller than the sum of its proper divisors (13223355213484).

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

12021232012220 is a wasteful number, since it uses less digits than its factorization.

12021232012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601061600620 (or 601061600618 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12021232012220 its reverse (2221023212021), we get a palindrome (14242255224241).

The spelling of 12021232012220 in words is "twelve trillion, twenty-one billion, two hundred thirty-two million, twelve thousand, two hundred twenty".