12214032420 has 96 divisors (see below), whose sum is σ = 34704004608. Its totient is φ = 3209306112.

The previous prime is 12214032349. The next prime is 12214032421. The reversal of 12214032420 is 2423041221.

It is a super-2 number, since 2×12214032420² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12214032421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1351557 + ... + 1360563.

It is an arithmetic number, because the mean of its divisors is an integer number (361500048).

Almost surely, 2^12214032420 is an apocalyptic number.

12214032420 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 12214032420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17352002304).

12214032420 is an abundant number, since it is smaller than the sum of its proper divisors (22489972188).

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

12214032420 is a wasteful number, since it uses less digits than its factorization.

12214032420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349 (or 9347 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12214032420 its reverse (2423041221), we get a palindrome (14637073641).

The spelling of 12214032420 in words is "twelve billion, two hundred fourteen million, thirty-two thousand, four hundred twenty".