21013202030203 has 6 divisors (see below), whose sum is σ = 22321982779796. Its totient is φ = 19777131322272.

The previous prime is 21013202030147. The next prime is 21013202030231. The reversal of 21013202030203 is 30203020231012.

It is not a de Polignac number, because 21013202030203 - 2⁹ = 21013202029691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21013202030903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36355020525 + ... + 36355021102.

Almost surely, 2^{21013202030203} is an apocalyptic number.

21013202030203 is a deficient number, since it is larger than the sum of its proper divisors (1308780749593).

21013202030203 is an equidigital number, since it uses as much as digits as its factorization.

21013202030203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72710041661 (or 72710041644 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21013202030203 its reverse (30203020231012), we get a palindrome (51216222261215).

The spelling of 21013202030203 in words is "twenty-one trillion, thirteen billion, two hundred two million, thirty thousand, two hundred three".