21230411413 has 2 divisors, whose sum is σ = 21230411414. Its totient is φ = 21230411412.

The previous prime is 21230411399. The next prime is 21230411417. The reversal of 21230411413 is 31411403212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16609538884 + 4620872529 = 128878^2 + 67977^2 .

It is a cyclic number.

It is not a de Polignac number, because 21230411413 - 2⁵ = 21230411381 is a prime.

It is a super-3 number, since 3×21230411413³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21230411417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615205706 + 10615205707.

It is an arithmetic number, because the mean of its divisors is an integer number (10615205707).

Almost surely, 2^21230411413 is an apocalyptic number.

It is an amenable number.

21230411413 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230411413 is an equidigital number, since it uses as much as digits as its factorization.

21230411413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21230411413 its reverse (31411403212), we get a palindrome (52641814625).

The spelling of 21230411413 in words is "twenty-one billion, two hundred thirty million, four hundred eleven thousand, four hundred thirteen".