22120021111 has 8 divisors (see below), whose sum is σ = 22172415104. Its totient is φ = 22067684280.

The previous prime is 22120021073. The next prime is 22120021169. The reversal of 22120021111 is 11112002122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22120021111 - 2¹¹ = 22120019063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120021091 and 22120021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120028111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816790 + ... + 843436.

It is an arithmetic number, because the mean of its divisors is an integer number (2771551888).

Almost surely, 2^22120021111 is an apocalyptic number.

22120021111 is a deficient number, since it is larger than the sum of its proper divisors (52393993).

22120021111 is a wasteful number, since it uses less digits than its factorization.

22120021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28581.

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

Adding to 22120021111 its reverse (11112002122), we get a palindrome (33232023233).

The spelling of 22120021111 in words is "twenty-two billion, one hundred twenty million, twenty-one thousand, one hundred eleven".