21230200231571 has 2 divisors, whose sum is σ = 21230200231572. Its totient is φ = 21230200231570.

The previous prime is 21230200231567. The next prime is 21230200231573. The reversal of 21230200231571 is 17513200203212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21230200231571 - 2² = 21230200231567 is a prime.

It is a super-3 number, since 3×21230200231571³ (a number of 41 digits) contains 333 as substring.

Together with 21230200231573, 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 (21230200231573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615100115785 + 10615100115786.

It is an arithmetic number, because the mean of its divisors is an integer number (10615100115786).

Almost surely, 2^{21230200231571} is an apocalyptic number.

21230200231571 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230200231571 is an equidigital number, since it uses as much as digits as its factorization.

21230200231571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 21230200231571 its reverse (17513200203212), we get a palindrome (38743400434783).

The spelling of 21230200231571 in words is "twenty-one trillion, two hundred thirty billion, two hundred million, two hundred thirty-one thousand, five hundred seventy-one".