20001002203 has 32 divisors (see below), whose sum is σ = 24932598656. Its totient is φ = 15622668288.

The previous prime is 20001002201. The next prime is 20001002221. The reversal of 20001002203 is 30220010002.

It is a cyclic number.

It is not a de Polignac number, because 20001002203 - 2¹ = 20001002201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20001002203.

It is not an unprimeable number, because it can be changed into a prime (20001002201) 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, 3819475 + ... + 3824707.

It is an arithmetic number, because the mean of its divisors is an integer number (779143708).

Almost surely, 2^20001002203 is an apocalyptic number.

20001002203 is a deficient number, since it is larger than the sum of its proper divisors (4931596453).

20001002203 is a wasteful number, since it uses less digits than its factorization.

20001002203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5783.

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20001002203 its reverse (30220010002), we get a palindrome (50221012205).

The spelling of 20001002203 in words is "twenty billion, one million, two thousand, two hundred three".