8113812534221 has 8 divisors (see below), whose sum is σ = 8542983676320. Its totient is φ = 7684854229872.

The previous prime is 8113812534181. The next prime is 8113812534271. The reversal of 8113812534221 is 1224352183118.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8113812534221 - 2¹⁸ = 8113812272077 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 (8113812534271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53131175 + ... + 53283668.

It is an arithmetic number, because the mean of its divisors is an integer number (1067872959540).

Almost surely, 2^{8113812534221} is an apocalyptic number.

It is an amenable number.

8113812534221 is a deficient number, since it is larger than the sum of its proper divisors (429171142099).

8113812534221 is a wasteful number, since it uses less digits than its factorization.

8113812534221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106418875.

The product of its digits is 92160, while the sum is 41.

The spelling of 8113812534221 in words is "eight trillion, one hundred thirteen billion, eight hundred twelve million, five hundred thirty-four thousand, two hundred twenty-one".