12222252444450 has 96 divisors (see below), whose sum is σ = 30957611086080. Its totient is φ = 3189766003200.

The previous prime is 12222252444443. The next prime is 12222252444509. The reversal of 12222252444450 is 5444425222221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12222252444399 and 12222252444408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 249975606 + ... + 250024494.

It is an arithmetic number, because the mean of its divisors is an integer number (322475115480).

Almost surely, 2^{12222252444450} is an apocalyptic number.

12222252444450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12222252444450 is an abundant number, since it is smaller than the sum of its proper divisors (18735358641630).

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

12222252444450 is a wasteful number, since it uses less digits than its factorization.

12222252444450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84412 (or 84407 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 39.

Adding to 12222252444450 its reverse (5444425222221), we get a palindrome (17666677666671).

The spelling of 12222252444450 in words is "twelve trillion, two hundred twenty-two billion, two hundred fifty-two million, four hundred forty-four thousand, four hundred fifty".