415315205220121 has 4 divisors (see below), whose sum is σ = 421004454606772. Its totient is φ = 409625955833472.

The previous prime is 415315205220119. The next prime is 415315205220131. The reversal of 415315205220121 is 121022502513514.

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 124228612432521 + 291086592787600 = 11145789^2 + 17061260^2 .

It is a cyclic number.

It is not a de Polignac number, because 415315205220121 - 2¹ = 415315205220119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (415315205220101) 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, 2844624693216 + ... + 2844624693361.

It is an arithmetic number, because the mean of its divisors is an integer number (105251113651693).

Almost surely, 2^{415315205220121} is an apocalyptic number.

It is an amenable number.

415315205220121 is a deficient number, since it is larger than the sum of its proper divisors (5689249386651).

415315205220121 is an equidigital number, since it uses as much as digits as its factorization.

415315205220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689249386650.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 415315205220121 its reverse (121022502513514), we get a palindrome (536337707733635).

The spelling of 415315205220121 in words is "four hundred fifteen trillion, three hundred fifteen billion, two hundred five million, two hundred twenty thousand, one hundred twenty-one".