247421182213 has 4 divisors (see below), whose sum is σ = 261975369420. Its totient is φ = 232866995008.

The previous prime is 247421182207. The next prime is 247421182219. The reversal of 247421182213 is 312281124742.

247421182213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (247421182207) and next prime (247421182219).

It can be written as a sum of positive squares in 2 ways, for example, as 215636710689 + 31784471524 = 464367^2 + 178282^2 .

It is a cyclic number.

It is not a de Polignac number, because 247421182213 - 2⁹ = 247421181701 is a prime.

It is a super-2 number, since 2×247421182213² (a number of 24 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 (247421182219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7277093578 + ... + 7277093611.

It is an arithmetic number, because the mean of its divisors is an integer number (65493842355).

Almost surely, 2^247421182213 is an apocalyptic number.

It is an amenable number.

247421182213 is a deficient number, since it is larger than the sum of its proper divisors (14554187207).

247421182213 is a wasteful number, since it uses less digits than its factorization.

247421182213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14554187206.

The product of its digits is 43008, while the sum is 37.

The spelling of 247421182213 in words is "two hundred forty-seven billion, four hundred twenty-one million, one hundred eighty-two thousand, two hundred thirteen".