20403222122 has 12 divisors (see below), whose sum is σ = 31993333890. Its totient is φ = 9758062248.

The previous prime is 20403222121. The next prime is 20403222127. The reversal of 20403222122 is 22122230402.

It can be written as a sum of positive squares in only one way, i.e., 19471690681 + 931531441 = 139541^2 + 30521^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20403222094 and 20403222103.

It is not an unprimeable number, because it can be changed into a prime (20403222121) 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, 9641297 + ... + 9643412.

Almost surely, 2^20403222122 is an apocalyptic number.

20403222122 is a deficient number, since it is larger than the sum of its proper divisors (11590111768).

20403222122 is a wasteful number, since it uses less digits than its factorization.

20403222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19284757 (or 19284734 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20403222122 its reverse (22122230402), we get a palindrome (42525452524).

The spelling of 20403222122 in words is "twenty billion, four hundred three million, two hundred twenty-two thousand, one hundred twenty-two".