2271031121 has 2 divisors, whose sum is σ = 2271031122. Its totient is φ = 2271031120.

The previous prime is 2271030997. The next prime is 2271031141. The reversal of 2271031121 is 1211301722.

It is an a-pointer prime, because the next prime (2271031141) can be obtained adding 2271031121 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2181917521 + 89113600 = 46711^2 + 9440^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271031121 - 2¹⁸ = 2270768977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2271031093 and 2271031102.

It is not a weakly prime, because it can be changed into another prime (2271031141) 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 as a sum of consecutive naturals, namely, 1135515560 + 1135515561.

It is an arithmetic number, because the mean of its divisors is an integer number (1135515561).

Almost surely, 2^2271031121 is an apocalyptic number.

It is an amenable number.

2271031121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271031121 is an equidigital number, since it uses as much as digits as its factorization.

2271031121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 2271031121 is about 47655.3367525611. The cubic root of 2271031121 is about 1314.4407923629.

Adding to 2271031121 its reverse (1211301722), we get a palindrome (3482332843).

The spelling of 2271031121 in words is "two billion, two hundred seventy-one million, thirty-one thousand, one hundred twenty-one".