2201302121 has 4 divisors (see below), whose sum is σ = 2201413200. Its totient is φ = 2201191044.

The previous prime is 2201302111. The next prime is 2201302151. The reversal of 2201302121 is 1212031022.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1212031022 = 2 ⋅606015511.

It is a cyclic number.

It is not a de Polignac number, because 2201302121 - 2¹⁸ = 2201039977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2201302096 and 2201302105.

It is not an unprimeable number, because it can be changed into a prime (2201302111) 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, 16811 + ... + 68448.

It is an arithmetic number, because the mean of its divisors is an integer number (550353300).

Almost surely, 2^2201302121 is an apocalyptic number.

It is an amenable number.

2201302121 is a deficient number, since it is larger than the sum of its proper divisors (111079).

2201302121 is an equidigital number, since it uses as much as digits as its factorization.

2201302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111078.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2201302121 is about 46918.0362014439. The cubic root of 2201302121 is about 1300.8479913101.

Adding to 2201302121 its reverse (1212031022), we get a palindrome (3413333143).

The spelling of 2201302121 in words is "two billion, two hundred one million, three hundred two thousand, one hundred twenty-one".