2201020212121 has 8 divisors (see below), whose sum is σ = 2317546688000. Its totient is φ = 2084562066960.

The previous prime is 2201020212107. The next prime is 2201020212137. The reversal of 2201020212121 is 1212120201022.

It is a happy number.

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 2201020212121 - 2²⁵ = 2200986657689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201020212095 and 2201020212104.

It is not an unprimeable number, because it can be changed into a prime (2201020212421) 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, 17016546 + ... + 17145403.

It is an arithmetic number, because the mean of its divisors is an integer number (289693336000).

Almost surely, 2^{2201020212121} is an apocalyptic number.

It is an amenable number.

2201020212121 is a deficient number, since it is larger than the sum of its proper divisors (116526475879).

2201020212121 is a wasteful number, since it uses less digits than its factorization.

2201020212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34165359.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2201020212121 its reverse (1212120201022), we get a palindrome (3413140413143).

The spelling of 2201020212121 in words is "two trillion, two hundred one billion, twenty million, two hundred twelve thousand, one hundred twenty-one".