21112422203 has 16 divisors (see below), whose sum is σ = 21495070080. Its totient is φ = 20733451200.

The previous prime is 21112422173. The next prime is 21112422307. The reversal of 21112422203 is 30222421112.

It is a cyclic number.

It is not a de Polignac number, because 21112422203 - 2⁶ = 21112422139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112442203) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12975476 + ... + 12977102.

It is an arithmetic number, because the mean of its divisors is an integer number (1343441880).

Almost surely, 2^21112422203 is an apocalyptic number.

21112422203 is a deficient number, since it is larger than the sum of its proper divisors (382647877).

21112422203 is a wasteful number, since it uses less digits than its factorization.

21112422203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21112422203 its reverse (30222421112), we get a palindrome (51334843315).

The spelling of 21112422203 in words is "twenty-one billion, one hundred twelve million, four hundred twenty-two thousand, two hundred three".