22001331121 has 8 divisors (see below), whose sum is σ = 27430231104. Its totient is φ = 17143894320.

The previous prime is 22001331097. The next prime is 22001331137. The reversal of 22001331121 is 12113310022.

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

It is not a de Polignac number, because 22001331121 - 2⁵ = 22001331089 is a prime.

It is a super-4 number, since 4×22001331121⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001331095 and 22001331104.

It is not an unprimeable number, because it can be changed into a prime (22001335121) 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, 142865710 + ... + 142865863.

It is an arithmetic number, because the mean of its divisors is an integer number (3428778888).

Almost surely, 2^22001331121 is an apocalyptic number.

It is an amenable number.

22001331121 is a deficient number, since it is larger than the sum of its proper divisors (5428899983).

22001331121 is a wasteful number, since it uses less digits than its factorization.

22001331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285731591.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 22001331121 its reverse (12113310022), we get a palindrome (34114641143).

The spelling of 22001331121 in words is "twenty-two billion, one million, three hundred thirty-one thousand, one hundred twenty-one".