12222315440 has 80 divisors (see below), whose sum is σ = 30877547520. Its totient is φ = 4482190080.

The previous prime is 12222315439. The next prime is 12222315463. The reversal of 12222315440 is 4451322221.

It is a tau number, because it is divible by the number of its divisors (80).

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, 82574 + ... + 176813.

It is an arithmetic number, because the mean of its divisors is an integer number (385969344).

Almost surely, 2^12222315440 is an apocalyptic number.

12222315440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222315440 is an abundant number, since it is smaller than the sum of its proper divisors (18655232080).

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

12222315440 is a wasteful number, since it uses less digits than its factorization.

12222315440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259450 (or 259444 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 12222315440 its reverse (4451322221), we get a palindrome (16673637661).

The spelling of 12222315440 in words is "twelve billion, two hundred twenty-two million, three hundred fifteen thousand, four hundred forty".