22201021111 has 4 divisors (see below), whose sum is σ = 22212508312. Its totient is φ = 22189533912.

The previous prime is 22201021103. The next prime is 22201021151. The reversal of 22201021111 is 11112010222.

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 22201021111 - 2³ = 22201021103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201021091 and 22201021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201021151) 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, 5740701 + ... + 5744566.

It is an arithmetic number, because the mean of its divisors is an integer number (5553127078).

Almost surely, 2^22201021111 is an apocalyptic number.

22201021111 is a deficient number, since it is larger than the sum of its proper divisors (11487201).

22201021111 is a wasteful number, since it uses less digits than its factorization.

22201021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11487200.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22201021111 its reverse (11112010222), we get a palindrome (33313031333).

It can be divided in two parts, 222010211 and 11, that added together give a palindrome (222010222).

The spelling of 22201021111 in words is "twenty-two billion, two hundred one million, twenty-one thousand, one hundred eleven".