12422221240 has 64 divisors (see below), whose sum is σ = 32836376160. Its totient is φ = 4169694720.

The previous prime is 12422221237. The next prime is 12422221243. The reversal of 12422221240 is 4212222421.

It is an interprime number because it is at equal distance from previous prime (12422221237) and next prime (12422221243).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12422221243) 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, 1080139 + ... + 1091578.

Almost surely, 2^12422221240 is an apocalyptic number.

12422221240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12422221240 is an abundant number, since it is smaller than the sum of its proper divisors (20414154920).

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

12422221240 is a wasteful number, since it uses less digits than its factorization.

12422221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171752 (or 2171748 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 12422221240 its reverse (4212222421), we get a palindrome (16634443661).

The spelling of 12422221240 in words is "twelve billion, four hundred twenty-two million, two hundred twenty-one thousand, two hundred forty".