22292213 has 8 divisors (see below), whose sum is σ = 23139480. Its totient is φ = 21450240.

The previous prime is 22292201. The next prime is 22292239. The reversal of 22292213 is 31229222.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 19864849 = 1558^2 + 4457^2 .

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 22292213 - 2¹² = 22288117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22292293) 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 7 ways as a sum of consecutive naturals, for example, 8633 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (2892435).

Almost surely, 2^22292213 is an apocalyptic number.

It is an amenable number.

22292213 is a deficient number, since it is larger than the sum of its proper divisors (847267).

22292213 is a wasteful number, since it uses less digits than its factorization.

22292213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647.

The product of its digits is 864, while the sum is 23.

The square root of 22292213 is about 4721.4630147868. The cubic root of 22292213 is about 281.4390749697.

The spelling of 22292213 in words is "twenty-two million, two hundred ninety-two thousand, two hundred thirteen".