21320203120233 has 16 divisors (see below), whose sum is σ = 28548621129600. Its totient is φ = 14152642341120.

The previous prime is 21320203120217. The next prime is 21320203120267. The reversal of 21320203120233 is 33202130202312.

It is not a de Polignac number, because 21320203120233 - 2⁴ = 21320203120217 is a prime.

It is a super-2 number, since 2×21320203120233² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21320203127233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3622108 + ... + 7467266.

It is an arithmetic number, because the mean of its divisors is an integer number (1784288820600).

Almost surely, 2^{21320203120233} is an apocalyptic number.

It is an amenable number.

21320203120233 is a deficient number, since it is larger than the sum of its proper divisors (7228418009367).

21320203120233 is a wasteful number, since it uses less digits than its factorization.

21320203120233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853072.

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

Adding to 21320203120233 its reverse (33202130202312), we get a palindrome (54522333322545).

The spelling of 21320203120233 in words is "twenty-one trillion, three hundred twenty billion, two hundred three million, one hundred twenty thousand, two hundred thirty-three".