21301020233147 has 2 divisors, whose sum is σ = 21301020233148. Its totient is φ = 21301020233146.

The previous prime is 21301020233093. The next prime is 21301020233149. The reversal of 21301020233147 is 74133202010312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21301020233147 - 2³⁴ = 21283840363963 is a prime.

Together with 21301020233149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21301020233149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650510116573 + 10650510116574.

It is an arithmetic number, because the mean of its divisors is an integer number (10650510116574).

Almost surely, 2^{21301020233147} is an apocalyptic number.

21301020233147 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301020233147 is an equidigital number, since it uses as much as digits as its factorization.

21301020233147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 21301020233147 its reverse (74133202010312), we get a palindrome (95434222243459).

The spelling of 21301020233147 in words is "twenty-one trillion, three hundred one billion, twenty million, two hundred thirty-three thousand, one hundred forty-seven".