22201022220121 has 8 divisors (see below), whose sum is σ = 22966791107400. Its totient is φ = 21435267759360.

The previous prime is 22201022220107. The next prime is 22201022220151. The reversal of 22201022220121 is 12102222010222.

It can be written as a sum of positive squares in 4 ways, for example, as 4394310180121 + 17806712040000 = 2096261^2 + 4219800^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22201022220121 - 2²¹ = 22201020122969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22201022220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428256 + ... + 6677233.

It is an arithmetic number, because the mean of its divisors is an integer number (2870848888425).

Almost surely, 2^{22201022220121} is an apocalyptic number.

It is an amenable number.

22201022220121 is a deficient number, since it is larger than the sum of its proper divisors (765768887279).

22201022220121 is a wasteful number, since it uses less digits than its factorization.

22201022220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213259.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22201022220121 its reverse (12102222010222), we get a palindrome (34303244230343).

The spelling of 22201022220121 in words is "twenty-two trillion, two hundred one billion, twenty-two million, two hundred twenty thousand, one hundred twenty-one".