11276221 has 4 divisors (see below), whose sum is σ = 12301344. Its totient is φ = 10251100.

The previous prime is 11276207. The next prime is 11276261. The reversal of 11276221 is 12267211.

It is a happy number.

11276221 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 11276221 - 2¹⁹ = 10751933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11276192 and 11276201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11276261) 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, 512545 + ... + 512566.

It is an arithmetic number, because the mean of its divisors is an integer number (3075336).

Almost surely, 2^11276221 is an apocalyptic number.

11276221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11276221 is a deficient number, since it is larger than the sum of its proper divisors (1025123).

11276221 is a wasteful number, since it uses less digits than its factorization.

11276221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025122.

The product of its digits is 336, while the sum is 22.

The square root of 11276221 is about 3358.0084871840. The cubic root of 11276221 is about 224.2441865702.

The spelling of 11276221 in words is "eleven million, two hundred seventy-six thousand, two hundred twenty-one".