22111221011 has 8 divisors (see below), whose sum is σ = 24137506224. Its totient is φ = 20087631520.

The previous prime is 22111221001. The next prime is 22111221019. The reversal of 22111221011 is 11012211122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22111221011 - 2¹⁰ = 22111219987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111221019) 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 7 ways as a sum of consecutive naturals, for example, 656756 + ... + 689601.

It is an arithmetic number, because the mean of its divisors is an integer number (3017188278).

Almost surely, 2^22111221011 is an apocalyptic number.

22111221011 is a deficient number, since it is larger than the sum of its proper divisors (2026285213).

22111221011 is a wasteful number, since it uses less digits than its factorization.

22111221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347861.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22111221011 its reverse (11012211122), we get a palindrome (33123432133).

The spelling of 22111221011 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, eleven".