12222444140 has 24 divisors (see below), whose sum is σ = 25691368752. Its totient is φ = 4884361280.

The previous prime is 12222444107. The next prime is 12222444211. The reversal of 12222444140 is 4144422221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266774 + ... + 309213.

It is an arithmetic number, because the mean of its divisors is an integer number (1070473698).

Almost surely, 2^12222444140 is an apocalyptic number.

12222444140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222444140 is an abundant number, since it is smaller than the sum of its proper divisors (13468924612).

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

12222444140 is a wasteful number, since it uses less digits than its factorization.

12222444140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577057 (or 577055 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 12222444140 its reverse (4144422221), we get a palindrome (16366866361).

The spelling of 12222444140 in words is "twelve billion, two hundred twenty-two million, four hundred forty-four thousand, one hundred forty".