22012012111 has 4 divisors (see below), whose sum is σ = 22014245224. Its totient is φ = 22009779000.

The previous prime is 22012012081. The next prime is 22012012147. The reversal of 22012012111 is 11121021022.

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 22012012111 - 2¹¹ = 22012010063 is a prime.

It is a super-3 number, since 3×22012012111³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012012091 and 22012012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012012151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101705 + ... + 1121506.

It is an arithmetic number, because the mean of its divisors is an integer number (5503561306).

Almost surely, 2^22012012111 is an apocalyptic number.

22012012111 is a deficient number, since it is larger than the sum of its proper divisors (2233113).

22012012111 is an equidigital number, since it uses as much as digits as its factorization.

22012012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233112.

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

Adding to 22012012111 its reverse (11121021022), we get a palindrome (33133033133).

The spelling of 22012012111 in words is "twenty-two billion, twelve million, twelve thousand, one hundred eleven".