21103130233 has 8 divisors (see below), whose sum is σ = 21205594368. Its totient is φ = 21000736464.

The previous prime is 21103130219. The next prime is 21103130261. The reversal of 21103130233 is 33203130112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21103130233 - 2⁵ = 21103130201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21103130233.

It is not an unprimeable number, because it can be changed into a prime (21103130033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643410 + ... + 675412.

It is an arithmetic number, because the mean of its divisors is an integer number (2650699296).

Almost surely, 2^21103130233 is an apocalyptic number.

It is an amenable number.

21103130233 is a deficient number, since it is larger than the sum of its proper divisors (102464135).

21103130233 is a wasteful number, since it uses less digits than its factorization.

21103130233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35183.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21103130233 its reverse (33203130112), we get a palindrome (54306260345).

The spelling of 21103130233 in words is "twenty-one billion, one hundred three million, one hundred thirty thousand, two hundred thirty-three".