12204023420 has 24 divisors (see below), whose sum is σ = 25637472000. Its totient is φ = 4879890752.

The previous prime is 12204023417. The next prime is 12204023423. The reversal of 12204023420 is 2432040221.

It is an interprime number because it is at equal distance from previous prime (12204023417) and next prime (12204023423).

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 = 12204023392 and 12204023401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204023423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48395 + ... + 163554.

It is an arithmetic number, because the mean of its divisors is an integer number (1068228000).

Almost surely, 2^12204023420 is an apocalyptic number.

12204023420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12204023420 is an abundant number, since it is smaller than the sum of its proper divisors (13433448580).

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

12204023420 is a wasteful number, since it uses less digits than its factorization.

12204023420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214837 (or 214835 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 12204023420 its reverse (2432040221), we get a palindrome (14636063641).

The spelling of 12204023420 in words is "twelve billion, two hundred four million, twenty-three thousand, four hundred twenty".