21222022311 has 12 divisors (see below), whose sum is σ = 35033179792. Its totient is φ = 12126869856.

The previous prime is 21222022307. The next prime is 21222022313. The reversal of 21222022311 is 11322022212.

21222022311 is a `hidden beast` number, since 212 + 220 + 2 + 231 + 1 = 666.

It is not a de Polignac number, because 21222022311 - 2² = 21222022307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222022313) 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, 168428686 + ... + 168428811.

Almost surely, 2^21222022311 is an apocalyptic number.

21222022311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21222022311 is a deficient number, since it is larger than the sum of its proper divisors (13811157481).

21222022311 is a wasteful number, since it uses less digits than its factorization.

21222022311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336857510 (or 336857507 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21222022311 its reverse (11322022212), we get a palindrome (32544044523).

Subtracting from 21222022311 its reverse (11322022212), we obtain a palindrome (9900000099).

The spelling of 21222022311 in words is "twenty-one billion, two hundred twenty-two million, twenty-two thousand, three hundred eleven".