21122303211 has 12 divisors (see below), whose sum is σ = 32115782920. Its totient is φ = 13340401920.

The previous prime is 21122303197. The next prime is 21122303227. The reversal of 21122303211 is 11230322112.

21122303211 is a `hidden beast` number, since 2 + 112 + 230 + 321 + 1 = 666.

It is not a de Polignac number, because 21122303211 - 2⁹ = 21122302699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122303911) 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, 61760950 + ... + 61761291.

Almost surely, 2^21122303211 is an apocalyptic number.

21122303211 is a deficient number, since it is larger than the sum of its proper divisors (10993479709).

21122303211 is a wasteful number, since it uses less digits than its factorization.

21122303211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123522266 (or 123522263 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21122303211 its reverse (11230322112), we get a palindrome (32352625323).

The spelling of 21122303211 in words is "twenty-one billion, one hundred twenty-two million, three hundred three thousand, two hundred eleven".