2221001323203 has 32 divisors (see below), whose sum is σ = 3386292146496. Its totient is φ = 1282727559168.

The previous prime is 2221001323187. The next prime is 2221001323243. The reversal of 2221001323203 is 3023231001222.

It is a happy number.

It is not a de Polignac number, because 2221001323203 - 2⁴ = 2221001323187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221001323203.

It is not an unprimeable number, because it can be changed into a prime (2221001323243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4510900 + ... + 4978977.

It is an arithmetic number, because the mean of its divisors is an integer number (105821629578).

Almost surely, 2^{2221001323203} is an apocalyptic number.

2221001323203 is a deficient number, since it is larger than the sum of its proper divisors (1165290823293).

2221001323203 is a wasteful number, since it uses less digits than its factorization.

2221001323203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490263.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 2221001323203 its reverse (3023231001222), we get a palindrome (5244232324425).

The spelling of 2221001323203 in words is "two trillion, two hundred twenty-one billion, one million, three hundred twenty-three thousand, two hundred three".