21232100003 has 8 divisors (see below), whose sum is σ = 22533215040. Its totient is φ = 19936781440.

The previous prime is 21232099921. The next prime is 21232100011. The reversal of 21232100003 is 30000123212.

It is a happy number.

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 21232100003 - 2¹⁴ = 21232083619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232100063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1441568 + ... + 1456221.

It is an arithmetic number, because the mean of its divisors is an integer number (2816651880).

Almost surely, 2^21232100003 is an apocalyptic number.

21232100003 is a deficient number, since it is larger than the sum of its proper divisors (1301115037).

21232100003 is a wasteful number, since it uses less digits than its factorization.

21232100003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898237.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21232100003 its reverse (30000123212), we get a palindrome (51232223215).

The spelling of 21232100003 in words is "twenty-one billion, two hundred thirty-two million, one hundred thousand, three".