2132221 has 8 divisors (see below), whose sum is σ = 2624384. Its totient is φ = 1686960.

The previous prime is 2132213. The next prime is 2132231. The reversal of 2132221 is 1222312.

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 2132221 - 2³ = 2132213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a d-powerful number, because it can be written as 2³ + 1 + 3⁵ + 2¹¹ + 2¹⁵ + 2²¹ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132231) 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, 11625 + ... + 11806.

It is an arithmetic number, because the mean of its divisors is an integer number (328048).

2^2132221 is an apocalyptic number.

It is an amenable number.

2132221 is a deficient number, since it is larger than the sum of its proper divisors (492163).

2132221 is a wasteful number, since it uses less digits than its factorization.

2132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23451.

The product of its digits is 48, while the sum is 13.

The square root of 2132221 is about 1460.2126557457. The cubic root of 2132221 is about 128.7095401821.

Adding to 2132221 its reverse (1222312), we get a palindrome (3354533).

Subtracting from 2132221 its reverse (1222312), we obtain a palindrome (909909).

The spelling of 2132221 in words is "two million, one hundred thirty-two thousand, two hundred twenty-one".