423415003004221 has 4 divisors (see below), whose sum is σ = 423678157140700. Its totient is φ = 423151848867744.

The previous prime is 423415003004219. The next prime is 423415003004363. The reversal of 423415003004221 is 122400300514324.

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 411294056308996 + 12120946695225 = 20280386^2 + 3481515^2 .

It is a cyclic number.

It is not a de Polignac number, because 423415003004221 - 2¹ = 423415003004219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423415003002221) 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, 131577065826 + ... + 131577069043.

It is an arithmetic number, because the mean of its divisors is an integer number (105919539285175).

Almost surely, 2^{423415003004221} is an apocalyptic number.

It is an amenable number.

423415003004221 is a deficient number, since it is larger than the sum of its proper divisors (263154136479).

423415003004221 is a wasteful number, since it uses less digits than its factorization.

423415003004221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263154136478.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 423415003004221 its reverse (122400300514324), we get a palindrome (545815303518545).

The spelling of 423415003004221 in words is "four hundred twenty-three trillion, four hundred fifteen billion, three million, four thousand, two hundred twenty-one".