2126232281 has 2 divisors, whose sum is σ = 2126232282. Its totient is φ = 2126232280.

The previous prime is 2126232233. The next prime is 2126232301. The reversal of 2126232281 is 1822326212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1187422681 + 938809600 = 34459^2 + 30640^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126232281 - 2¹⁸ = 2125970137 is a prime.

It is a super-2 number, since 2×2126232281² = 9041727425532925922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2126232181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063116140 + 1063116141.

It is an arithmetic number, because the mean of its divisors is an integer number (1063116141).

Almost surely, 2^2126232281 is an apocalyptic number.

It is an amenable number.

2126232281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126232281 is an equidigital number, since it uses as much as digits as its factorization.

2126232281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 2126232281 is about 46111.0863133802. The cubic root of 2126232281 is about 1285.8892603622.

Adding to 2126232281 its reverse (1822326212), we get a palindrome (3948558493).

The spelling of 2126232281 in words is "two billion, one hundred twenty-six million, two hundred thirty-two thousand, two hundred eighty-one".