22402213 has 4 divisors (see below), whose sum is σ = 22563520. Its totient is φ = 22240908.

The previous prime is 22402169. The next prime is 22402217. The reversal of 22402213 is 31220422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31220422 = 2 ⋅15610211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22402213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22402217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80445 + ... + 80722.

It is an arithmetic number, because the mean of its divisors is an integer number (5640880).

Almost surely, 2^22402213 is an apocalyptic number.

It is an amenable number.

22402213 is a deficient number, since it is larger than the sum of its proper divisors (161307).

22402213 is a wasteful number, since it uses less digits than its factorization.

22402213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161306.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22402213 is about 4733.0976115014. The cubic root of 22402213 is about 281.9012321151.

Adding to 22402213 its reverse (31220422), we get a palindrome (53622635).

The spelling of 22402213 in words is "twenty-two million, four hundred two thousand, two hundred thirteen".