21131002122303 has 32 divisors (see below), whose sum is σ = 30283245792000. Its totient is φ = 13065433595136.

The previous prime is 21131002122233. The next prime is 21131002122359. The reversal of 21131002122303 is 30322120013112.

It is not a de Polignac number, because 21131002122303 - 2¹⁴ = 21131002105919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21131002122303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131002122203) 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 31 ways as a sum of consecutive naturals, for example, 6272253 + ... + 9033446.

It is an arithmetic number, because the mean of its divisors is an integer number (946351431000).

Almost surely, 2^{21131002122303} is an apocalyptic number.

21131002122303 is a deficient number, since it is larger than the sum of its proper divisors (9152243669697).

21131002122303 is a wasteful number, since it uses less digits than its factorization.

21131002122303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15306231.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21131002122303 its reverse (30322120013112), we get a palindrome (51453122135415).

The spelling of 21131002122303 in words is "twenty-one trillion, one hundred thirty-one billion, two million, one hundred twenty-two thousand, three hundred three".