12423042220 has 24 divisors (see below), whose sum is σ = 26092435824. Its totient is φ = 4968446016.

The previous prime is 12423042217. The next prime is 12423042227. The reversal of 12423042220 is 2224032421.

It is a junction number, because it is equal to n+sod(n) for n = 12423042191 and 12423042200.

It is not an unprimeable number, because it can be changed into a prime (12423042227) 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, 94234 + ... + 183646.

It is an arithmetic number, because the mean of its divisors is an integer number (1087184826).

Almost surely, 2^12423042220 is an apocalyptic number.

12423042220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12423042220 is an abundant number, since it is smaller than the sum of its proper divisors (13669393604).

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

12423042220 is a wasteful number, since it uses less digits than its factorization.

12423042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96369 (or 96367 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 12423042220 its reverse (2224032421), we get a palindrome (14647074641).

The spelling of 12423042220 in words is "twelve billion, four hundred twenty-three million, forty-two thousand, two hundred twenty".