12220404140 has 48 divisors (see below), whose sum is σ = 29700249600. Its totient is φ = 4136812992.

The previous prime is 12220404121. The next prime is 12220404149. The reversal of 12220404140 is 4140402221.

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

It is not an unprimeable number, because it can be changed into a prime (12220404149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541400 + ... + 563519.

It is an arithmetic number, because the mean of its divisors is an integer number (618755200).

Almost surely, 2^12220404140 is an apocalyptic number.

12220404140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220404140 is an abundant number, since it is smaller than the sum of its proper divisors (17479845460).

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

12220404140 is a wasteful number, since it uses less digits than its factorization.

12220404140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105014 (or 1105012 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12220404140 its reverse (4140402221), we get a palindrome (16360806361).

The spelling of 12220404140 in words is "twelve billion, two hundred twenty million, four hundred four thousand, one hundred forty".