10115232221 has 8 divisors (see below), whose sum is σ = 10416204288. Its totient is φ = 9816844000.

The previous prime is 10115232199. The next prime is 10115232223. The reversal of 10115232221 is 12223251101.

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 10115232221 - 2²⁶ = 10048123357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10115232193 and 10115232202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10115232223) 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 7 ways as a sum of consecutive naturals, for example, 638015 + ... + 653676.

It is an arithmetic number, because the mean of its divisors is an integer number (1302025536).

Almost surely, 2^10115232221 is an apocalyptic number.

It is an amenable number.

10115232221 is a deficient number, since it is larger than the sum of its proper divisors (300972067).

10115232221 is a wasteful number, since it uses less digits than its factorization.

10115232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291923.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 10115232221 its reverse (12223251101), we get a palindrome (22338483322).

The spelling of 10115232221 in words is "ten billion, one hundred fifteen million, two hundred thirty-two thousand, two hundred twenty-one".