12220432021 has 8 divisors (see below), whose sum is σ = 13986661824. Its totient is φ = 10459315680.

The previous prime is 12220431961. The next prime is 12220432051. The reversal of 12220432021 is 12023402221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12220432021 - 2⁷ = 12220431893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12220432021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220432051) 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 7 ways as a sum of consecutive naturals, for example, 1273240 + ... + 1282801.

It is an arithmetic number, because the mean of its divisors is an integer number (1748332728).

Almost surely, 2^12220432021 is an apocalyptic number.

It is an amenable number.

12220432021 is a deficient number, since it is larger than the sum of its proper divisors (1766229803).

12220432021 is an equidigital number, since it uses as much as digits as its factorization.

12220432021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556731.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12220432021 its reverse (12023402221), we get a palindrome (24243834242).

The spelling of 12220432021 in words is "twelve billion, two hundred twenty million, four hundred thirty-two thousand, twenty-one".