21230433330413 has 4 divisors (see below), whose sum is σ = 21231114894528. Its totient is φ = 21229751766300.

The previous prime is 21230433330317. The next prime is 21230433330439. The reversal of 21230433330413 is 31403333403212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21230433330413 - 2¹⁰ = 21230433329389 is a prime.

It is a super-2 number, since 2×21230433330413² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21230433330413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230433333413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340735331 + ... + 340797632.

It is an arithmetic number, because the mean of its divisors is an integer number (5307778723632).

Almost surely, 2^{21230433330413} is an apocalyptic number.

It is an amenable number.

21230433330413 is a deficient number, since it is larger than the sum of its proper divisors (681564115).

21230433330413 is an equidigital number, since it uses as much as digits as its factorization.

21230433330413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681564114.

The product of its (nonzero) digits is 46656, while the sum is 32.

Adding to 21230433330413 its reverse (31403333403212), we get a palindrome (52633766733625).

The spelling of 21230433330413 in words is "twenty-one trillion, two hundred thirty billion, four hundred thirty-three million, three hundred thirty thousand, four hundred thirteen".