21001200003233 has 4 divisors (see below), whose sum is σ = 21001725454128. Its totient is φ = 21000674552340.

The previous prime is 21001200003197. The next prime is 21001200003247. The reversal of 21001200003233 is 33230000210012.

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 21001200003233 - 2²⁴ = 21001183226017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21001200303233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262665491 + ... + 262745432.

It is an arithmetic number, because the mean of its divisors is an integer number (5250431363532).

Almost surely, 2^{21001200003233} is an apocalyptic number.

It is an amenable number.

21001200003233 is a deficient number, since it is larger than the sum of its proper divisors (525450895).

21001200003233 is an equidigital number, since it uses as much as digits as its factorization.

21001200003233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525450894.

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

Adding to 21001200003233 its reverse (33230000210012), we get a palindrome (54231200213245).

The spelling of 21001200003233 in words is "twenty-one trillion, one billion, two hundred million, three thousand, two hundred thirty-three".