22012218403 has 6 divisors (see below), whose sum is σ = 25606050036. Its totient is φ = 18867615732.

The previous prime is 22012218343. The next prime is 22012218413. The reversal of 22012218403 is 30481221022.

It is a de Polignac number, because none of the positive numbers 2^k-22012218403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22012218413) 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 5 ways as a sum of consecutive naturals, for example, 224614425 + ... + 224614522.

It is an arithmetic number, because the mean of its divisors is an integer number (4267675006).

Almost surely, 2^22012218403 is an apocalyptic number.

22012218403 is a deficient number, since it is larger than the sum of its proper divisors (3593831633).

22012218403 is an equidigital number, since it uses as much as digits as its factorization.

22012218403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449228961 (or 449228954 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 22012218403 its reverse (30481221022), we get a palindrome (52493439425).

The spelling of 22012218403 in words is "twenty-two billion, twelve million, two hundred eighteen thousand, four hundred three".