2201021110121 has 8 divisors (see below), whose sum is σ = 2209278886824. Its totient is φ = 2192778362880.

The previous prime is 2201021110109. The next prime is 2201021110129. The reversal of 2201021110121 is 1210111201022.

It can be written as a sum of positive squares in 4 ways, for example, as 691966104025 + 1509055006096 = 831845^2 + 1228436^2 .

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 2201021110121 - 2³⁸ = 1926143203177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201021110096 and 2201021110105.

It is not an unprimeable number, because it can be changed into a prime (2201021110129) 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, 3463880 + ... + 4049753.

It is an arithmetic number, because the mean of its divisors is an integer number (276159860853).

Almost surely, 2^{2201021110121} is an apocalyptic number.

It is an amenable number.

2201021110121 is a deficient number, since it is larger than the sum of its proper divisors (8257776703).

2201021110121 is an equidigital number, since it uses as much as digits as its factorization.

2201021110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514731.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2201021110121 its reverse (1210111201022), we get a palindrome (3411132311143).

Subtracting from 2201021110121 its reverse (1210111201022), we obtain a palindrome (990909909099).

The spelling of 2201021110121 in words is "two trillion, two hundred one billion, twenty-one million, one hundred ten thousand, one hundred twenty-one".