8121271232 has 56 divisors (see below), whose sum is σ = 16978579200. Its totient is φ = 3843576576.

The previous prime is 8121271231. The next prime is 8121271237. The reversal of 8121271232 is 2321721218.

It is a junction number, because it is equal to n+sod(n) for n = 8121271195 and 8121271204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121271231) 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, 1922819 + ... + 1927037.

Almost surely, 2^8121271232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8121271232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8489289600).

8121271232 is an abundant number, since it is smaller than the sum of its proper divisors (8857307968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8121271232 is a wasteful number, since it uses less digits than its factorization.

8121271232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5833 (or 5823 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 8121271232 is about 90118.0960295988. The cubic root of 8121271232 is about 2010.0552967799.

The spelling of 8121271232 in words is "eight billion, one hundred twenty-one million, two hundred seventy-one thousand, two hundred thirty-two".