2201310121 has 4 divisors (see below), whose sum is σ = 2209493700. Its totient is φ = 2193126544.

The previous prime is 2201310103. The next prime is 2201310157. The reversal of 2201310121 is 1210131022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210131022 = 2 ⋅605065511.

It can be written as a sum of positive squares in 2 ways, for example, as 565916521 + 1635393600 = 23789^2 + 40440^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201310121 - 2⁷ = 2201309993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201310101) 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, 4091386 + ... + 4091923.

It is an arithmetic number, because the mean of its divisors is an integer number (552373425).

Almost surely, 2^2201310121 is an apocalyptic number.

It is an amenable number.

2201310121 is a deficient number, since it is larger than the sum of its proper divisors (8183579).

2201310121 is an equidigital number, since it uses as much as digits as its factorization.

2201310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8183578.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2201310121 is about 46918.1214564266. The cubic root of 2201310121 is about 1300.8495671609.

Adding to 2201310121 its reverse (1210131022), we get a palindrome (3411441143).

The spelling of 2201310121 in words is "two billion, two hundred one million, three hundred ten thousand, one hundred twenty-one".