22213001 has 4 divisors (see below), whose sum is σ = 22416900. Its totient is φ = 22009104.

The previous prime is 22212997. The next prime is 22213007. The reversal of 22213001 is 10031222.

It is a happy number.

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 7590025 + 14622976 = 2755^2 + 3824^2 .

It is a cyclic number.

It is not a de Polignac number, because 22213001 - 2² = 22212997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22213007) 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, 101786 + ... + 102003.

It is an arithmetic number, because the mean of its divisors is an integer number (5604225).

Almost surely, 2^22213001 is an apocalyptic number.

It is an amenable number.

22213001 is a deficient number, since it is larger than the sum of its proper divisors (203899).

22213001 is a wasteful number, since it uses less digits than its factorization.

22213001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203898.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 22213001 is about 4713.0670481121. The cubic root of 22213001 is about 281.1053289870.

Adding to 22213001 its reverse (10031222), we get a palindrome (32244223).

The spelling of 22213001 in words is "twenty-two million, two hundred thirteen thousand, one".