22111011111211 has 4 divisors (see below), whose sum is σ = 24121103030424. Its totient is φ = 20100919192000.

The previous prime is 22111011111131. The next prime is 22111011111221. The reversal of 22111011111211 is 11211111011122.

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 22111011111211 - 2⁷ = 22111011111083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111011111221) 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, 1005045959590 + ... + 1005045959611.

It is an arithmetic number, because the mean of its divisors is an integer number (6030275757606).

Almost surely, 2^{22111011111211} is an apocalyptic number.

22111011111211 is a deficient number, since it is larger than the sum of its proper divisors (2010091919213).

22111011111211 is a wasteful number, since it uses less digits than its factorization.

22111011111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010091919212.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 22111011111211 its reverse (11211111011122), we get a palindrome (33322122122333).

It can be divided in two parts, 22111011 and 111211, that added together give a palindrome (22222222).

The spelling of 22111011111211 in words is "twenty-two trillion, one hundred eleven billion, eleven million, one hundred eleven thousand, two hundred eleven".