22143212450 has 24 divisors (see below), whose sum is σ = 42606597780. Its totient is φ = 8551860800.

The previous prime is 22143212387. The next prime is 22143212459. The reversal of 22143212450 is 5421234122.

It can be written as a sum of positive squares in 6 ways, for example, as 6413286889 + 15729925561 = 80083^2 + 125419^2 .

It is not an unprimeable number, because it can be changed into a prime (22143212459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7634141 + ... + 7637040.

Almost surely, 2^22143212450 is an apocalyptic number.

22143212450 is a deficient number, since it is larger than the sum of its proper divisors (20463385330).

22143212450 is a wasteful number, since it uses less digits than its factorization.

22143212450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15271222 (or 15271217 counting only the distinct ones).

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

Adding to 22143212450 its reverse (5421234122), we get a palindrome (27564446572).

The spelling of 22143212450 in words is "twenty-two billion, one hundred forty-three million, two hundred twelve thousand, four hundred fifty".