21223222311 has 24 divisors (see below), whose sum is σ = 29135030400. Its totient is φ = 13741839072.

The previous prime is 21223222301. The next prime is 21223222343. The reversal of 21223222311 is 11322232212.

It is not a de Polignac number, because 21223222311 - 2¹³ = 21223214119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223222301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2455780 + ... + 2464406.

It is an arithmetic number, because the mean of its divisors is an integer number (1213959600).

Almost surely, 2^21223222311 is an apocalyptic number.

21223222311 is a deficient number, since it is larger than the sum of its proper divisors (7911808089).

21223222311 is an equidigital number, since it uses as much as digits as its factorization.

21223222311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303 (or 9266 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

Adding to 21223222311 its reverse (11322232212), we get a palindrome (32545454523).

Subtracting from 21223222311 its reverse (11322232212), we obtain a palindrome (9900990099).

The spelling of 21223222311 in words is "twenty-one billion, two hundred twenty-three million, two hundred twenty-two thousand, three hundred eleven".