11021261 has 2 divisors, whose sum is σ = 11021262. Its totient is φ = 11021260.

The previous prime is 11021249. The next prime is 11021279. The reversal of 11021261 is 16212011.

11021261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10118761 + 902500 = 3181^2 + 950^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021261 - 2¹⁸ = 10759117 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 (11021281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510630 + 5510631.

It is an arithmetic number, because the mean of its divisors is an integer number (5510631).

Almost surely, 2^11021261 is an apocalyptic number.

It is an amenable number.

11021261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021261 is an equidigital number, since it uses as much as digits as its factorization.

11021261 is an evil number, because the sum of its binary digits is even.

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

The square root of 11021261 is about 3319.8284594238. The cubic root of 11021261 is about 222.5412018132.

Adding to 11021261 its reverse (16212011), we get a palindrome (27233272).

The spelling of 11021261 in words is "eleven million, twenty-one thousand, two hundred sixty-one".