22221202111 has 4 divisors (see below), whose sum is σ = 22552861912. Its totient is φ = 21889542312.

The previous prime is 22221202049. The next prime is 22221202123. The reversal of 22221202111 is 11120212222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22221202111 - 2⁷ = 22221201983 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 (22221202151) 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, 165829800 + ... + 165829933.

It is an arithmetic number, because the mean of its divisors is an integer number (5638215478).

Almost surely, 2^22221202111 is an apocalyptic number.

22221202111 is a deficient number, since it is larger than the sum of its proper divisors (331659801).

22221202111 is an equidigital number, since it uses as much as digits as its factorization.

22221202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331659800.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22221202111 its reverse (11120212222), we get a palindrome (33341414333).

The spelling of 22221202111 in words is "twenty-two billion, two hundred twenty-one million, two hundred two thousand, one hundred eleven".