11220261 has 16 divisors (see below), whose sum is σ = 16214016. Its totient is φ = 6860736.

The previous prime is 11220247. The next prime is 11220269. The reversal of 11220261 is 16202211.

11220261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11220261 - 2⁶ = 11220197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11220261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5916 + ... + 7578.

It is an arithmetic number, because the mean of its divisors is an integer number (1013376).

Almost surely, 2^11220261 is an apocalyptic number.

It is an amenable number.

11220261 is a deficient number, since it is larger than the sum of its proper divisors (4993755).

11220261 is a wasteful number, since it uses less digits than its factorization.

11220261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 11220261 is about 3349.6658042258. The cubic root of 11220261 is about 223.8726223615.

Adding to 11220261 its reverse (16202211), we get a palindrome (27422472).

The spelling of 11220261 in words is "eleven million, two hundred twenty thousand, two hundred sixty-one".