422004421321213 has 4 divisors (see below), whose sum is σ = 422005759748668. Its totient is φ = 422003082893760.

The previous prime is 422004421321183. The next prime is 422004421321229. The reversal of 422004421321213 is 312123124400224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 208464564643204 + 213539856678009 = 14438302^2 + 14613003^2 .

It is a cyclic number.

It is not a de Polignac number, because 422004421321213 - 2¹³ = 422004421313021 is a prime.

It is a super-2 number, since 2×422004421321213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422004421321283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668740668 + ... + 669371413.

It is an arithmetic number, because the mean of its divisors is an integer number (105501439937167).

Almost surely, 2^{422004421321213} is an apocalyptic number.

It is an amenable number.

422004421321213 is a deficient number, since it is larger than the sum of its proper divisors (1338427455).

422004421321213 is a wasteful number, since it uses less digits than its factorization.

422004421321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338427454.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 422004421321213 its reverse (312123124400224), we get a palindrome (734127545721437).

The spelling of 422004421321213 in words is "four hundred twenty-two trillion, four billion, four hundred twenty-one million, three hundred twenty-one thousand, two hundred thirteen".