11422261 has 2 divisors, whose sum is σ = 11422262. Its totient is φ = 11422260.

The previous prime is 11422247. The next prime is 11422273. The reversal of 11422261 is 16222411.

11422261 = T₂₇₅₈ + T₂₇₅₉ + T₂₇₆₀.

11422261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 1874161 = 3090^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 11422261 - 2⁹ = 11421749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11422241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5711130 + 5711131.

It is an arithmetic number, because the mean of its divisors is an integer number (5711131).

Almost surely, 2^11422261 is an apocalyptic number.

11422261 is the 2760-th centered triangular number.

It is an amenable number.

11422261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11422261 is an equidigital number, since it uses as much as digits as its factorization.

11422261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 11422261 is about 3379.6835650694. The cubic root of 11422261 is about 225.2081103328.

Adding to 11422261 its reverse (16222411), we get a palindrome (27644672).

It can be divided in two parts, 1142 and 2261, that added together give a triangular number (3403 = T₈₂).

The spelling of 11422261 in words is "eleven million, four hundred twenty-two thousand, two hundred sixty-one".