2123221003 has 4 divisors (see below), whose sum is σ = 2123856088. Its totient is φ = 2122585920.

The previous prime is 2123220997. The next prime is 2123221007. The reversal of 2123221003 is 3001223212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2123221003 - 2⁵ = 2123220971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123221007) 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, 312501 + ... + 319222.

It is an arithmetic number, because the mean of its divisors is an integer number (530964022).

Almost surely, 2^2123221003 is an apocalyptic number.

2123221003 is a deficient number, since it is larger than the sum of its proper divisors (635085).

2123221003 is an equidigital number, since it uses as much as digits as its factorization.

2123221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635084.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2123221003 is about 46078.4223145715. The cubic root of 2123221003 is about 1285.2819263623.

Adding to 2123221003 its reverse (3001223212), we get a palindrome (5124444215).

The spelling of 2123221003 in words is "two billion, one hundred twenty-three million, two hundred twenty-one thousand, three".