22012003 has 8 divisors (see below), whose sum is σ = 24346448. Its totient is φ = 19769184.

The previous prime is 22011967. The next prime is 22012019. The reversal of 22012003 is 30021022.

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 22012003 - 2¹³ = 22003811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012303) 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, 22401 + ... + 23362.

It is an arithmetic number, because the mean of its divisors is an integer number (3043306).

Almost surely, 2^22012003 is an apocalyptic number.

22012003 is a deficient number, since it is larger than the sum of its proper divisors (2334445).

22012003 is a wasteful number, since it uses less digits than its factorization.

22012003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45813.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 22012003 is about 4691.6951094461. The cubic root of 22012003 is about 280.2548827070.

Adding to 22012003 its reverse (30021022), we get a palindrome (52033025).

The spelling of 22012003 in words is "twenty-two million, twelve thousand, three".