22011022111 has 4 divisors (see below), whose sum is σ = 23704177672. Its totient is φ = 20317866552.

The previous prime is 22011022091. The next prime is 22011022133. The reversal of 22011022111 is 11122011022.

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 22011022111 - 2¹¹ = 22011020063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1693155547 = 22011022111 / (2 + 2 + 0 + 1 + 1 + 0 + 2 + 2 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011022091 and 22011022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011022151) 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, 846577761 + ... + 846577786.

It is an arithmetic number, because the mean of its divisors is an integer number (5926044418).

Almost surely, 2^22011022111 is an apocalyptic number.

22011022111 is a deficient number, since it is larger than the sum of its proper divisors (1693155561).

22011022111 is a wasteful number, since it uses less digits than its factorization.

22011022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693155560.

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

Adding to 22011022111 its reverse (11122011022), we get a palindrome (33133033133).

It can be divided in two parts, 22011022 and 111, that multiplied together give a palindrome (2443223442).

The spelling of 22011022111 in words is "twenty-two billion, eleven million, twenty-two thousand, one hundred eleven".