12264022261 has 2 divisors, whose sum is σ = 12264022262. Its totient is φ = 12264022260.

The previous prime is 12264022259. The next prime is 12264022273. The reversal of 12264022261 is 16222046221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6641272036 + 5622750225 = 81494^2 + 74985^2 .

It is a cyclic number.

It is not a de Polignac number, because 12264022261 - 2¹ = 12264022259 is a prime.

Together with 12264022259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12264022201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6132011130 + 6132011131.

It is an arithmetic number, because the mean of its divisors is an integer number (6132011131).

Almost surely, 2^12264022261 is an apocalyptic number.

It is an amenable number.

12264022261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12264022261 is an equidigital number, since it uses as much as digits as its factorization.

12264022261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 12264022261 its reverse (16222046221), we get a palindrome (28486068482).

The spelling of 12264022261 in words is "twelve billion, two hundred sixty-four million, twenty-two thousand, two hundred sixty-one".