12422255222420 has 48 divisors (see below), whose sum is σ = 26179906294080. Its totient is φ = 4951165503744.

The previous prime is 12422255222387. The next prime is 12422255222449. The reversal of 12422255222420 is 2422255222421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19388027 + ... + 20018493.

It is an arithmetic number, because the mean of its divisors is an integer number (545414714460).

Almost surely, 2^{12422255222420} is an apocalyptic number.

12422255222420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12422255222420 is an abundant number, since it is smaller than the sum of its proper divisors (13757651071660).

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

12422255222420 is a wasteful number, since it uses less digits than its factorization.

12422255222420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633992 (or 633990 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

Subtracting from 12422255222420 its reverse (2422255222421), we obtain a palindrome (9999999999999).

The spelling of 12422255222420 in words is "twelve trillion, four hundred twenty-two billion, two hundred fifty-five million, two hundred twenty-two thousand, four hundred twenty".