2231110121 has 2 divisors, whose sum is σ = 2231110122. Its totient is φ = 2231110120.

The previous prime is 2231110109. The next prime is 2231110139. The reversal of 2231110121 is 1210111322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1752594496 + 478515625 = 41864^2 + 21875^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231110121 - 2¹⁸ = 2230847977 is a prime.

It is a super-3 number, since 3×2231110121³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231110096 and 2231110105.

It is not a weakly prime, because it can be changed into another prime (2231110151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115555060 + 1115555061.

It is an arithmetic number, because the mean of its divisors is an integer number (1115555061).

Almost surely, 2^2231110121 is an apocalyptic number.

It is an amenable number.

2231110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231110121 is an equidigital number, since it uses as much as digits as its factorization.

2231110121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2231110121 is about 47234.6284096742. The cubic root of 2231110121 is about 1306.6933134910.

Adding to 2231110121 its reverse (1210111322), we get a palindrome (3441221443).

The spelling of 2231110121 in words is "two billion, two hundred thirty-one million, one hundred ten thousand, one hundred twenty-one".