2213381 has 2 divisors, whose sum is σ = 2213382. Its totient is φ = 2213380.

The previous prime is 2213363. The next prime is 2213389. The reversal of 2213381 is 1833122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2076481 + 136900 = 1441^2 + 370^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213381 - 2⁶ = 2213317 is a prime.

It is a super-2 number, since 2×2213381² = 9798110902322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2213389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106690 + 1106691.

It is an arithmetic number, because the mean of its divisors is an integer number (1106691).

2^2213381 is an apocalyptic number.

It is an amenable number.

2213381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2213381 is an equidigital number, since it uses as much as digits as its factorization.

2213381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 2213381 is about 1487.7435934999. The cubic root of 2213381 is about 130.3222969457.

The spelling of 2213381 in words is "two million, two hundred thirteen thousand, three hundred eighty-one".