2001100223203 has 4 divisors (see below), whose sum is σ = 2008539257760. Its totient is φ = 1993661188648.

The previous prime is 2001100223191. The next prime is 2001100223257. The reversal of 2001100223203 is 3023220011002.

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 2001100223203 - 2²⁵ = 2001066668771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001100223293) 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, 3719516875 + ... + 3719517412.

It is an arithmetic number, because the mean of its divisors is an integer number (502134814440).

Almost surely, 2^{2001100223203} is an apocalyptic number.

2001100223203 is a deficient number, since it is larger than the sum of its proper divisors (7439034557).

2001100223203 is an equidigital number, since it uses as much as digits as its factorization.

2001100223203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7439034556.

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

Adding to 2001100223203 its reverse (3023220011002), we get a palindrome (5024320234205).

The spelling of 2001100223203 in words is "two trillion, one billion, one hundred million, two hundred twenty-three thousand, two hundred three".