20001023011203 has 24 divisors (see below), whose sum is σ = 28916293268160. Its totient is φ = 12291666248160.

The previous prime is 20001023011153. The next prime is 20001023011219. The reversal of 20001023011203 is 30211032010002.

It is not a de Polignac number, because 20001023011203 - 2¹⁷ = 20001022880131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001023011303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26316633 + ... + 27065978.

It is an arithmetic number, because the mean of its divisors is an integer number (1204845552840).

Almost surely, 2^{20001023011203} is an apocalyptic number.

20001023011203 is a deficient number, since it is larger than the sum of its proper divisors (8915270256957).

20001023011203 is a wasteful number, since it uses less digits than its factorization.

20001023011203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53383379 (or 53383366 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20001023011203 its reverse (30211032010002), we get a palindrome (50212055021205).

The spelling of 20001023011203 in words is "twenty trillion, one billion, twenty-three million, eleven thousand, two hundred three".