21130322012203 has 2 divisors, whose sum is σ = 21130322012204. Its totient is φ = 21130322012202.

The previous prime is 21130322012201. The next prime is 21130322012231. The reversal of 21130322012203 is 30221022303112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21130322012203 - 2¹ = 21130322012201 is a prime.

Together with 21130322012201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21130322012201) 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 as a sum of consecutive naturals, namely, 10565161006101 + 10565161006102.

It is an arithmetic number, because the mean of its divisors is an integer number (10565161006102).

Almost surely, 2^{21130322012203} is an apocalyptic number.

21130322012203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130322012203 is an equidigital number, since it uses as much as digits as its factorization.

21130322012203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21130322012203 its reverse (30221022303112), we get a palindrome (51351344315315).

The spelling of 21130322012203 in words is "twenty-one trillion, one hundred thirty billion, three hundred twenty-two million, twelve thousand, two hundred three".