20001020023203 has 16 divisors (see below), whose sum is σ = 26770030848000. Its totient is φ = 13283021891360.

The previous prime is 20001020023189. The next prime is 20001020023219. The reversal of 20001020023203 is 30232002010002.

It is a cyclic number.

It is not a de Polignac number, because 20001020023203 - 2¹⁴ = 20001020006819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001020023273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6239998 + ... + 8884796.

It is an arithmetic number, because the mean of its divisors is an integer number (1673126928000).

Almost surely, 2^{20001020023203} is an apocalyptic number.

20001020023203 is a deficient number, since it is larger than the sum of its proper divisors (6769010824797).

20001020023203 is a wasteful number, since it uses less digits than its factorization.

20001020023203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654442.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20001020023203 its reverse (30232002010002), we get a palindrome (50233022033205).

The spelling of 20001020023203 in words is "twenty trillion, one billion, twenty million, twenty-three thousand, two hundred three".