22012222450 has 48 divisors (see below), whose sum is σ = 43716505536. Its totient is φ = 8226187200.

The previous prime is 22012222429. The next prime is 22012222457. The reversal of 22012222450 is 5422221022.

It is not an unprimeable number, because it can be changed into a prime (22012222457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173121 + ... + 272020.

It is an arithmetic number, because the mean of its divisors is an integer number (910760532).

Almost surely, 2^22012222450 is an apocalyptic number.

22012222450 is a deficient number, since it is larger than the sum of its proper divisors (21704283086).

22012222450 is a wasteful number, since it uses less digits than its factorization.

22012222450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445219 (or 445214 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 22012222450 its reverse (5422221022), we get a palindrome (27434443472).

The spelling of 22012222450 in words is "twenty-two billion, twelve million, two hundred twenty-two thousand, four hundred fifty".