21203031203133 has 16 divisors (see below), whose sum is σ = 30468425432256. Its totient is φ = 13038141790080.

The previous prime is 21203031203063. The next prime is 21203031203143. The reversal of 21203031203133 is 33130213030212.

It is not a de Polignac number, because 21203031203133 - 2²⁹ = 21202494332221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203031203143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205727235 + ... + 205830272.

It is an arithmetic number, because the mean of its divisors is an integer number (1904276589516).

Almost surely, 2^{21203031203133} is an apocalyptic number.

It is an amenable number.

21203031203133 is a deficient number, since it is larger than the sum of its proper divisors (9265394229123).

21203031203133 is a wasteful number, since it uses less digits than its factorization.

21203031203133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411558844.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21203031203133 its reverse (33130213030212), we get a palindrome (54333244233345).

The spelling of 21203031203133 in words is "twenty-one trillion, two hundred three billion, thirty-one million, two hundred three thousand, one hundred thirty-three".