12222422144 has 128 divisors (see below), whose sum is σ = 26125545600. Its totient is φ = 5679120384.

The previous prime is 12222422141. The next prime is 12222422291. The reversal of 12222422144 is 44122422221.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×12222422144² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12222422141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46472957 + ... + 46473219.

It is an arithmetic number, because the mean of its divisors is an integer number (204105825).

Almost surely, 2^12222422144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12222422144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13062772800).

12222422144 is an abundant number, since it is smaller than the sum of its proper divisors (13903123456).

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

12222422144 is a wasteful number, since it uses less digits than its factorization.

12222422144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 578 counting only the distinct ones).

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

Adding to 12222422144 its reverse (44122422221), we get a palindrome (56344844365).

The spelling of 12222422144 in words is "twelve billion, two hundred twenty-two million, four hundred twenty-two thousand, one hundred forty-four".