22201022221121 has 4 divisors (see below), whose sum is σ = 22201692595200. Its totient is φ = 22200351847044.

The previous prime is 22201022221043. The next prime is 22201022221139. The reversal of 22201022221121 is 12112222010222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22201022221121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201022221093 and 22201022221102.

It is not an unprimeable number, because it can be changed into a prime (22201022221141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335137361 + ... + 335203598.

It is an arithmetic number, because the mean of its divisors is an integer number (5550423148800).

Almost surely, 2^{22201022221121} is an apocalyptic number.

It is an amenable number.

22201022221121 is a deficient number, since it is larger than the sum of its proper divisors (670374079).

22201022221121 is an equidigital number, since it uses as much as digits as its factorization.

22201022221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670374078.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22201022221121 its reverse (12112222010222), we get a palindrome (34313244231343).

The spelling of 22201022221121 in words is "twenty-two trillion, two hundred one billion, twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".