22100221121 has 16 divisors (see below), whose sum is σ = 24540606720. Its totient is φ = 19732344720.

The previous prime is 22100221109. The next prime is 22100221141. The reversal of 22100221121 is 12112200122.

It is not a de Polignac number, because 22100221121 - 2⁶ = 22100221057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22100221096 and 22100221105.

It is not an unprimeable number, because it can be changed into a prime (22100221141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713666 + ... + 743988.

It is an arithmetic number, because the mean of its divisors is an integer number (1533787920).

Almost surely, 2^22100221121 is an apocalyptic number.

It is an amenable number.

22100221121 is a deficient number, since it is larger than the sum of its proper divisors (2440385599).

22100221121 is a wasteful number, since it uses less digits than its factorization.

22100221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31516.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22100221121 its reverse (12112200122), we get a palindrome (34212421243).

The spelling of 22100221121 in words is "twenty-two billion, one hundred million, two hundred twenty-one thousand, one hundred twenty-one".