22001121121 has 8 divisors (see below), whose sum is σ = 26011177920. Its totient is φ = 18207824208.

The previous prime is 22001121113. The next prime is 22001121161. The reversal of 22001121121 is 12112110022.

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

It is not a de Polignac number, because 22001121121 - 2³ = 22001121113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22001121161) 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, 54189751 + ... + 54190156.

It is an arithmetic number, because the mean of its divisors is an integer number (3251397240).

Almost surely, 2^22001121121 is an apocalyptic number.

It is an amenable number.

22001121121 is a deficient number, since it is larger than the sum of its proper divisors (4010056799).

22001121121 is a wasteful number, since it uses less digits than its factorization.

22001121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108379943.

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

Adding to 22001121121 its reverse (12112110022), we get a palindrome (34113231143).

The spelling of 22001121121 in words is "twenty-two billion, one million, one hundred twenty-one thousand, one hundred twenty-one".