2202161 has 8 divisors (see below), whose sum is σ = 2411304. Its totient is φ = 1998720.

The previous prime is 2202149. The next prime is 2202169. The reversal of 2202161 is 1612022.

It can be written as a sum of positive squares in 4 ways, for example, as 185761 + 2016400 = 431^2 + 1420^2 .

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 2202161 - 2¹⁰ = 2201137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2202169) 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, 596 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (301413).

2^2202161 is an apocalyptic number.

It is an amenable number.

2202161 is a deficient number, since it is larger than the sum of its proper divisors (209143).

2202161 is a wasteful number, since it uses less digits than its factorization.

2202161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2202161 is about 1483.9679915686. The cubic root of 2202161 is about 130.1017152665.

Adding to 2202161 its reverse (1612022), we get a palindrome (3814183).

It can be divided in two parts, 22021 and 61, that multiplied together give a square (1343281 = 1159²).

The spelling of 2202161 in words is "two million, two hundred two thousand, one hundred sixty-one".