22213393 has 2 divisors, whose sum is σ = 22213394. Its totient is φ = 22213392.

The previous prime is 22213369. The next prime is 22213397. The reversal of 22213393 is 39331222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22212369 + 1024 = 4713^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 22213393 - 2¹³ = 22205201 is a prime.

It is equal to p_1401793 and since 22213393 and 1401793 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22213397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106696 + 11106697.

It is an arithmetic number, because the mean of its divisors is an integer number (11106697).

Almost surely, 2^22213393 is an apocalyptic number.

It is an amenable number.

22213393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22213393 is an equidigital number, since it uses as much as digits as its factorization.

22213393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 25.

The square root of 22213393 is about 4713.1086344365. The cubic root of 22213393 is about 281.1069825628.

The spelling of 22213393 in words is "twenty-two million, two hundred thirteen thousand, three hundred ninety-three".