21103300023 has 8 divisors (see below), whose sum is σ = 30302174448. Its totient is φ = 12986646144.

The previous prime is 21103299991. The next prime is 21103300033. The reversal of 21103300023 is 32000330112.

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

It is not a de Polignac number, because 21103300023 - 2⁵ = 21103299991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21103299975 and 21103300011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103300033) 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, 270555090 + ... + 270555167.

It is an arithmetic number, because the mean of its divisors is an integer number (3787771806).

Almost surely, 2^21103300023 is an apocalyptic number.

21103300023 is a deficient number, since it is larger than the sum of its proper divisors (9198874425).

21103300023 is a wasteful number, since it uses less digits than its factorization.

21103300023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541110273.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21103300023 its reverse (32000330112), we get a palindrome (53103630135).

The spelling of 21103300023 in words is "twenty-one billion, one hundred three million, three hundred thousand, twenty-three".