21223203322311 has 28 divisors (see below), whose sum is σ = 31834695064488. Its totient is φ = 14142378628944.

The previous prime is 21223203322303. The next prime is 21223203322319. The reversal of 21223203322311 is 11322330232212.

21223203322311 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 20 + 3 + 322 + 311 = 666.

It is an interprime number because it is at equal distance from previous prime (21223203322303) and next prime (21223203322319).

It is not a de Polignac number, because 21223203322311 - 2³ = 21223203322303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223203322319) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5001540 + ... + 8213513.

Almost surely, 2^{21223203322311} is an apocalyptic number.

21223203322311 is a deficient number, since it is larger than the sum of its proper divisors (10611491742177).

21223203322311 is an equidigital number, since it uses as much as digits as its factorization.

21223203322311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13217274 (or 13217259 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21223203322311 its reverse (11322330232212), we get a palindrome (32545533554523).

The spelling of 21223203322311 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred three million, three hundred twenty-two thousand, three hundred eleven".