21030103330233 has 4 divisors (see below), whose sum is σ = 28040137773648. Its totient is φ = 14020068886820.

The previous prime is 21030103330213. The next prime is 21030103330237. The reversal of 21030103330233 is 33203330103012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21030103330233 - 2¹⁸ = 21030103068089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21030103330237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505017221703 + ... + 3505017221708.

It is an arithmetic number, because the mean of its divisors is an integer number (7010034443412).

Almost surely, 2^{21030103330233} is an apocalyptic number.

It is an amenable number.

21030103330233 is a deficient number, since it is larger than the sum of its proper divisors (7010034443415).

21030103330233 is an equidigital number, since it uses as much as digits as its factorization.

21030103330233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7010034443414.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 21030103330233 its reverse (33203330103012), we get a palindrome (54233433433245).

The spelling of 21030103330233 in words is "twenty-one trillion, thirty billion, one hundred three million, three hundred thirty thousand, two hundred thirty-three".