21000023310203 has 8 divisors (see below), whose sum is σ = 24558166795008. Its totient is φ = 17581414864104.

The previous prime is 21000023310197. The next prime is 21000023310221. The reversal of 21000023310203 is 30201332000012.

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

It is not a de Polignac number, because 21000023310203 - 2¹⁰ = 21000023309179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000023310223) 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, 34883759351 + ... + 34883759952.

It is an arithmetic number, because the mean of its divisors is an integer number (3069770849376).

Almost surely, 2^{21000023310203} is an apocalyptic number.

21000023310203 is a deficient number, since it is larger than the sum of its proper divisors (3558143484805).

21000023310203 is an equidigital number, since it uses as much as digits as its factorization.

21000023310203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69767519353.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21000023310203 its reverse (30201332000012), we get a palindrome (51201355310215).

The spelling of 21000023310203 in words is "twenty-one trillion, twenty-three million, three hundred ten thousand, two hundred three".