21112133003 has 4 divisors (see below), whose sum is σ = 22736143248. Its totient is φ = 19488122760.

The previous prime is 21112132999. The next prime is 21112133027. The reversal of 21112133003 is 30033121112.

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 21112133003 - 2² = 21112132999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112133083) 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 3 ways as a sum of consecutive naturals, for example, 812005103 + ... + 812005128.

It is an arithmetic number, because the mean of its divisors is an integer number (5684035812).

Almost surely, 2^21112133003 is an apocalyptic number.

21112133003 is a deficient number, since it is larger than the sum of its proper divisors (1624010245).

21112133003 is a wasteful number, since it uses less digits than its factorization.

21112133003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624010244.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21112133003 its reverse (30033121112), we get a palindrome (51145254115).

The spelling of 21112133003 in words is "twenty-one billion, one hundred twelve million, one hundred thirty-three thousand, three".