2212261 has 8 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 2067648.

The previous prime is 2212247. The next prime is 2212271. The reversal of 2212261 is 1622122.

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

It is a cyclic number.

It is not a de Polignac number, because 2212261 - 2⁵ = 2212229 is a prime.

It is a Duffinian number.

2212261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212241) 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, 2680 + ... + 3406.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

2^2212261 is an apocalyptic number.

It is an amenable number.

2212261 is a deficient number, since it is larger than the sum of its proper divisors (146459).

2212261 is a wasteful number, since it uses less digits than its factorization.

2212261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923.

The product of its digits is 96, while the sum is 16.

The square root of 2212261 is about 1487.3671369235. The cubic root of 2212261 is about 130.3003116362.

Adding to 2212261 its reverse (1622122), we get a palindrome (3834383).

The spelling of 2212261 in words is "two million, two hundred twelve thousand, two hundred sixty-one".