21202131003 has 8 divisors (see below), whose sum is σ = 28271742288. Its totient is φ = 14133636864.

The previous prime is 21202131001. The next prime is 21202131011. The reversal of 21202131003 is 30013120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21202131003 - 2¹ = 21202131001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202131001) 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 7 ways as a sum of consecutive naturals, for example, 233950 + ... + 311667.

It is an arithmetic number, because the mean of its divisors is an integer number (3533967786).

Almost surely, 2^21202131003 is an apocalyptic number.

21202131003 is a deficient number, since it is larger than the sum of its proper divisors (7069611285).

21202131003 is a wasteful number, since it uses less digits than its factorization.

21202131003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558573.

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

Adding to 21202131003 its reverse (30013120212), we get a palindrome (51215251215).

The spelling of 21202131003 in words is "twenty-one billion, two hundred two million, one hundred thirty-one thousand, three".