22120112011 has 4 divisors (see below), whose sum is σ = 22139705800.
Its totient is φ = 22100518224.
The previous prime is 22120111973. The next prime is 22120112017. The reversal of 22120112011 is 11021102122.
Adding to 22120112011 its reverse (11021102122), we get a palindrome (33141214133).
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 22120112011 - 221 = 22118014859 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 22120111982 and 22120112000.
It is not an unprimeable number, because it can be changed into a prime (22120112017) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9795201 + ... + 9797458.
It is an arithmetic number, because the mean of its divisors is an integer number (5534926450).
Almost surely, 222120112011 is an apocalyptic number.
22120112011 is a deficient number, since it is larger than the sum of its proper divisors (19593789).
22120112011 is a wasteful number, since it uses less digits than its factorization.
22120112011 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 19593788.
The product of its (nonzero) digits is 16, while the sum is 13.
The spelling of 22120112011 in words is "twenty-two billion, one hundred twenty million, one hundred twelve thousand, eleven".