22221313211 has 4 divisors (see below), whose sum is σ = 22269307872. Its totient is φ = 22173318552.

The previous prime is 22221313201. The next prime is 22221313271. The reversal of 22221313211 is 11231312222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221313211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221313201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23996636 + ... + 23997561.

It is an arithmetic number, because the mean of its divisors is an integer number (5567326968).

Almost surely, 2^22221313211 is an apocalyptic number.

22221313211 is a deficient number, since it is larger than the sum of its proper divisors (47994661).

22221313211 is an equidigital number, since it uses as much as digits as its factorization.

22221313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47994660.

The product of its digits is 288, while the sum is 20.

Adding to 22221313211 its reverse (11231312222), we get a palindrome (33452625433).

The spelling of 22221313211 in words is "twenty-two billion, two hundred twenty-one million, three hundred thirteen thousand, two hundred eleven".