22112221022111 has 16 divisors (see below), whose sum is σ = 24147042823680. Its totient is φ = 20081505575520.

The previous prime is 22112221022081. The next prime is 22112221022153. The reversal of 22112221022111 is 11122012221122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22112221022111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112224022111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161166206 + ... + 161303348.

It is an arithmetic number, because the mean of its divisors is an integer number (1509190176480).

Almost surely, 2^{22112221022111} is an apocalyptic number.

22112221022111 is a deficient number, since it is larger than the sum of its proper divisors (2034821801569).

22112221022111 is a wasteful number, since it uses less digits than its factorization.

22112221022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152006.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22112221022111 its reverse (11122012221122), we get a palindrome (33234233243233).

The spelling of 22112221022111 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, twenty-two thousand, one hundred eleven".