2132321 has 2 divisors, whose sum is σ = 2132322. Its totient is φ = 2132320.

The previous prime is 2132311. The next prime is 2132323. The reversal of 2132321 is 1232312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2062096 + 70225 = 1436^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132321 - 2¹⁴ = 2115937 is a prime.

Together with 2132323, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2132296 and 2132305.

It is not a weakly prime, because it can be changed into another prime (2132323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066160 + 1066161.

It is an arithmetic number, because the mean of its divisors is an integer number (1066161).

2^2132321 is an apocalyptic number.

It is an amenable number.

2132321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132321 is an equidigital number, since it uses as much as digits as its factorization.

2132321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 14.

The square root of 2132321 is about 1460.2468969322. The cubic root of 2132321 is about 128.7115522864.

Adding to 2132321 its reverse (1232312), we get a palindrome (3364633).

Subtracting from 2132321 its reverse (1232312), we obtain a palindrome (900009).

The spelling of 2132321 in words is "two million, one hundred thirty-two thousand, three hundred twenty-one".