22011809903 has 4 divisors (see below), whose sum is σ = 22030355160. Its totient is φ = 21993264648.

The previous prime is 22011809893. The next prime is 22011809917. The reversal of 22011809903 is 30990811022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22011809903 - 2⁴ = 22011809887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011809983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9270848 + ... + 9273221.

It is an arithmetic number, because the mean of its divisors is an integer number (5507588790).

Almost surely, 2^22011809903 is an apocalyptic number.

22011809903 is a deficient number, since it is larger than the sum of its proper divisors (18545257).

22011809903 is a wasteful number, since it uses less digits than its factorization.

22011809903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18545256.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 22011809903 in words is "twenty-two billion, eleven million, eight hundred nine thousand, nine hundred three".