22101121111 has 8 divisors (see below), whose sum is σ = 22307225600. Its totient is φ = 21895077600.

The previous prime is 22101121087. The next prime is 22101121117. The reversal of 22101121111 is 11112110122.

It is a happy number.

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 22101121111 - 2⁵ = 22101121079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22101121091 and 22101121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101121117) 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, 1068970 + ... + 1089448.

It is an arithmetic number, because the mean of its divisors is an integer number (2788403200).

Almost surely, 2^22101121111 is an apocalyptic number.

22101121111 is a deficient number, since it is larger than the sum of its proper divisors (206104489).

22101121111 is a wasteful number, since it uses less digits than its factorization.

22101121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30489.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22101121111 its reverse (11112110122), we get a palindrome (33213231233).

The spelling of 22101121111 in words is "twenty-two billion, one hundred one million, one hundred twenty-one thousand, one hundred eleven".