12416415350221 has 4 divisors (see below), whose sum is σ = 12416426117532. Its totient is φ = 12416404582912.

The previous prime is 12416415350219. The next prime is 12416415350243. The reversal of 12416415350221 is 12205351461421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10781569260900 + 1634846089321 = 3283530^2 + 1278611^2 .

It is a cyclic number.

It is not a de Polignac number, because 12416415350221 - 2¹ = 12416415350219 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 (12416415350281) 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, 3413620 + ... + 6040333.

It is an arithmetic number, because the mean of its divisors is an integer number (3104106529383).

Almost surely, 2^{12416415350221} is an apocalyptic number.

It is an amenable number.

12416415350221 is a deficient number, since it is larger than the sum of its proper divisors (10767311).

12416415350221 is an equidigital number, since it uses as much as digits as its factorization.

12416415350221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767310.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 12416415350221 in words is "twelve trillion, four hundred sixteen billion, four hundred fifteen million, three hundred fifty thousand, two hundred twenty-one".