20001223303 has 4 divisors (see below), whose sum is σ = 20002102560. Its totient is φ = 20000344048.

The previous prime is 20001223301. The next prime is 20001223309. The reversal of 20001223303 is 30332210002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30332210002 = 2 ⋅15166105001.

It is a cyclic number.

It is not a de Polignac number, because 20001223303 - 2¹ = 20001223301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001223301) 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, 404575 + ... + 451312.

It is an arithmetic number, because the mean of its divisors is an integer number (5000525640).

Almost surely, 2^20001223303 is an apocalyptic number.

20001223303 is a deficient number, since it is larger than the sum of its proper divisors (879257).

20001223303 is an equidigital number, since it uses as much as digits as its factorization.

20001223303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879256.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20001223303 its reverse (30332210002), we get a palindrome (50333433305).

The spelling of 20001223303 in words is "twenty billion, one million, two hundred twenty-three thousand, three hundred three".