21243233103 has 8 divisors (see below), whose sum is σ = 28788644016. Its totient is φ = 13929988800.

The previous prime is 21243233083. The next prime is 21243233153. The reversal of 21243233103 is 30133234212.

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

It is not a de Polignac number, because 21243233103 - 2⁵ = 21243233071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243233153) 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, 58041438 + ... + 58041803.

It is an arithmetic number, because the mean of its divisors is an integer number (3598580502).

Almost surely, 2^21243233103 is an apocalyptic number.

21243233103 is a deficient number, since it is larger than the sum of its proper divisors (7545410913).

21243233103 is a wasteful number, since it uses less digits than its factorization.

21243233103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116083305.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21243233103 its reverse (30133234212), we get a palindrome (51376467315).

The spelling of 21243233103 in words is "twenty-one billion, two hundred forty-three million, two hundred thirty-three thousand, one hundred three".