21230200113131 has 2 divisors, whose sum is σ = 21230200113132. Its totient is φ = 21230200113130.

The previous prime is 21230200113029. The next prime is 21230200113151. The reversal of 21230200113131 is 13131100203212.

It is a happy number.

It is an a-pointer prime, because the next prime (21230200113151) can be obtained adding 21230200113131 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21230200113131 is a prime.

It is a super-2 number, since 2×21230200113131² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21230200113151) 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, 10615100056565 + 10615100056566.

It is an arithmetic number, because the mean of its divisors is an integer number (10615100056566).

Almost surely, 2^{21230200113131} is an apocalyptic number.

21230200113131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230200113131 is an equidigital number, since it uses as much as digits as its factorization.

21230200113131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21230200113131 its reverse (13131100203212), we get a palindrome (34361300316343).

The spelling of 21230200113131 in words is "twenty-one trillion, two hundred thirty billion, two hundred million, one hundred thirteen thousand, one hundred thirty-one".