12420104022 has 24 divisors (see below), whose sum is σ = 26936316264. Its totient is φ = 4136020704.

The previous prime is 12420104009. The next prime is 12420104023. The reversal of 12420104022 is 22040102421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12420103986 and 12420104004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420104023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315388 + ... + 352575.

It is an arithmetic number, because the mean of its divisors is an integer number (1122346511).

Almost surely, 2^12420104022 is an apocalyptic number.

12420104022 is an abundant number, since it is smaller than the sum of its proper divisors (14516212242).

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

12420104022 is a wasteful number, since it uses less digits than its factorization.

12420104022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669004 (or 669001 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12420104022 its reverse (22040102421), we get a palindrome (34460206443).

The spelling of 12420104022 in words is "twelve billion, four hundred twenty million, one hundred four thousand, twenty-two".