22221110121 has 8 divisors (see below), whose sum is σ = 33860739264. Its totient is φ = 12697777200.

The previous prime is 22221110111. The next prime is 22221110123. The reversal of 22221110121 is 12101112222.

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

It is not a de Polignac number, because 22221110121 - 2⁵ = 22221110089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22221110121.

It is not an unprimeable number, because it can be changed into a prime (22221110123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529074030 + ... + 529074071.

It is an arithmetic number, because the mean of its divisors is an integer number (4232592408).

Almost surely, 2^22221110121 is an apocalyptic number.

22221110121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22221110121 is a deficient number, since it is larger than the sum of its proper divisors (11639629143).

22221110121 is a wasteful number, since it uses less digits than its factorization.

22221110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058148111.

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

Adding to 22221110121 its reverse (12101112222), we get a palindrome (34322222343).

The spelling of 22221110121 in words is "twenty-two billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-one".