22033213 has 4 divisors (see below), whose sum is σ = 22448988.
Its totient is φ = 21617440.
The previous prime is 22033211. The next prime is 22033237. The reversal of 22033213 is 31233022.
Adding to 22033213 its reverse (31233022), we get a palindrome (53266235).
It can be divided in two parts, 220 and 33213, that added together give a palindrome (33433).
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 6017209 + 16016004 = 2453^2 + 4002^2
It is a cyclic number.
It is not a de Polignac number, because 22033213 - 21 = 22033211 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 (22033211) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207808 + ... + 207913.
It is an arithmetic number, because the mean of its divisors is an integer number (5612247).
Almost surely, 222033213 is an apocalyptic number.
It is an amenable number.
22033213 is a deficient number, since it is larger than the sum of its proper divisors (415775).
22033213 is an equidigital number, since it uses as much as digits as its factorization.
22033213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 415774.
The product of its (nonzero) digits is 216, while the sum is 16.
The square root of 22033213 is about 4693.9549422635.
The cubic root of 22033213 is about 280.3448684278.
The spelling of 22033213 in words is "twenty-two million, thirty-three thousand, two hundred thirteen".