21200303223 has 12 divisors (see below), whose sum is σ = 33406538568. Its totient is φ = 12848668560.

The previous prime is 21200303191. The next prime is 21200303233. The reversal of 21200303223 is 32230300212.

It is a happy number.

It is not a de Polignac number, because 21200303223 - 2⁵ = 21200303191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21200303196 and 21200303205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200303233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107072140 + ... + 107072337.

It is an arithmetic number, because the mean of its divisors is an integer number (2783878214).

Almost surely, 2^21200303223 is an apocalyptic number.

21200303223 is a deficient number, since it is larger than the sum of its proper divisors (12206235345).

21200303223 is a wasteful number, since it uses less digits than its factorization.

21200303223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214144494 (or 214144491 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21200303223 its reverse (32230300212), we get a palindrome (53430603435).

It can be divided in two parts, 21200 and 303223, that added together give a palindrome (324423).

The spelling of 21200303223 in words is "twenty-one billion, two hundred million, three hundred three thousand, two hundred twenty-three".