21003311202223 has 6 divisors (see below), whose sum is σ = 24432423235296. Its totient is φ = 18002838173292.

The previous prime is 21003311202193. The next prime is 21003311202229. The reversal of 21003311202223 is 32220211330012.

It is not a de Polignac number, because 21003311202223 - 2⁵ = 21003311202191 is a prime.

It is a super-2 number, since 2×21003311202223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21003311202194 and 21003311202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003311202229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214319502015 + ... + 214319502112.

It is an arithmetic number, because the mean of its divisors is an integer number (4072070539216).

Almost surely, 2^{21003311202223} is an apocalyptic number.

21003311202223 is a deficient number, since it is larger than the sum of its proper divisors (3429112033073).

21003311202223 is an equidigital number, since it uses as much as digits as its factorization.

21003311202223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428639004141 (or 428639004134 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21003311202223 its reverse (32220211330012), we get a palindrome (53223522532235).

The spelling of 21003311202223 in words is "twenty-one trillion, three billion, three hundred eleven million, two hundred two thousand, two hundred twenty-three".