22012221111 has 16 divisors (see below), whose sum is σ = 29530705248. Its totient is φ = 14584438400.

The previous prime is 22012221067. The next prime is 22012221137. The reversal of 22012221111 is 11112221022.

It is a cyclic number.

It is not a de Polignac number, because 22012221111 - 2⁷ = 22012220983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012221211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536341 + ... + 575921.

It is an arithmetic number, because the mean of its divisors is an integer number (1845669078).

Almost surely, 2^22012221111 is an apocalyptic number.

22012221111 is a deficient number, since it is larger than the sum of its proper divisors (7518484137).

22012221111 is a wasteful number, since it uses less digits than its factorization.

22012221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40722.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22012221111 its reverse (11112221022), we get a palindrome (33124442133).

The spelling of 22012221111 in words is "twenty-two billion, twelve million, two hundred twenty-one thousand, one hundred eleven".