22003001 has 8 divisors (see below), whose sum is σ = 22619520. Its totient is φ = 21395088.

The previous prime is 22002991. The next prime is 22003013. The reversal of 22003001 is 10030022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22003001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22003001.

It is not an unprimeable number, because it can be changed into a prime (22003061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3215 + ... + 7371.

It is an arithmetic number, because the mean of its divisors is an integer number (2827440).

Almost surely, 2^22003001 is an apocalyptic number.

It is an amenable number.

22003001 is a deficient number, since it is larger than the sum of its proper divisors (616519).

22003001 is an equidigital number, since it uses as much as digits as its factorization.

22003001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 22003001 is about 4690.7356565895. The cubic root of 22003001 is about 280.2166732742.

Adding to 22003001 its reverse (10030022), we get a palindrome (32033023).

The spelling of 22003001 in words is "twenty-two million, three thousand, one".