11228261 has 4 divisors (see below), whose sum is σ = 12249024. Its totient is φ = 10207500.

The previous prime is 11228257. The next prime is 11228263. The reversal of 11228261 is 16282211.

11228261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16282211 = 11 ⋅1480201.

It is a cyclic number.

It is not a de Polignac number, because 11228261 - 2² = 11228257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11228263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510365 + ... + 510386.

It is an arithmetic number, because the mean of its divisors is an integer number (3062256).

Almost surely, 2^11228261 is an apocalyptic number.

11228261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11228261 is a deficient number, since it is larger than the sum of its proper divisors (1020763).

11228261 is a wasteful number, since it uses less digits than its factorization.

11228261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020762.

The product of its digits is 384, while the sum is 23.

The square root of 11228261 is about 3350.8597404248. The cubic root of 11228261 is about 223.9258164744.

The spelling of 11228261 in words is "eleven million, two hundred twenty-eight thousand, two hundred sixty-one".