11222861 has 8 divisors (see below), whose sum is σ = 12116664. Its totient is φ = 10333440.

The previous prime is 11222857. The next prime is 11222867. The reversal of 11222861 is 16822211.

It can be written as a sum of positive squares in 4 ways, for example, as 361 + 11222500 = 19^2 + 3350^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11222861 - 2² = 11222857 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 (11222867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5945 + ... + 7601.

It is an arithmetic number, because the mean of its divisors is an integer number (1514583).

Almost surely, 2^11222861 is an apocalyptic number.

It is an amenable number.

11222861 is a deficient number, since it is larger than the sum of its proper divisors (893803).

11222861 is a wasteful number, since it uses less digits than its factorization.

11222861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191.

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

The square root of 11222861 is about 3350.0538801637. The cubic root of 11222861 is about 223.8899132208.

The spelling of 11222861 in words is "eleven million, two hundred twenty-two thousand, eight hundred sixty-one".