22012220111 has 4 divisors (see below), whose sum is σ = 25156822992. Its totient is φ = 18867617232.

The previous prime is 22012220101. The next prime is 22012220137. The reversal of 22012220111 is 11102221022.

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 22012220111 - 2⁶ = 22012220047 is a prime.

It is a super-2 number, since 2×22012220111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012220101) 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, 1572301430 + ... + 1572301443.

It is an arithmetic number, because the mean of its divisors is an integer number (6289205748).

Almost surely, 2^22012220111 is an apocalyptic number.

22012220111 is a deficient number, since it is larger than the sum of its proper divisors (3144602881).

22012220111 is an equidigital number, since it uses as much as digits as its factorization.

22012220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144602880.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22012220111 its reverse (11102221022), we get a palindrome (33114441133).

The spelling of 22012220111 in words is "twenty-two billion, twelve million, two hundred twenty thousand, one hundred eleven".