231330103232221 has 8 divisors (see below), whose sum is σ = 264378561864704. Its totient is φ = 198281969856720.

The previous prime is 231330103232183. The next prime is 231330103232233. The reversal of 231330103232221 is 122232301033132.

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 231330103232221 - 2³⁹ = 230780347418333 is a prime.

It is a super-2 number, since 2×231330103232221² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231330103232221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231330103233221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79788285 + ... + 82636738.

It is an arithmetic number, because the mean of its divisors is an integer number (33047320233088).

Almost surely, 2^{231330103232221} is an apocalyptic number.

It is an amenable number.

231330103232221 is a deficient number, since it is larger than the sum of its proper divisors (33048458632483).

231330103232221 is a wasteful number, since it uses less digits than its factorization.

231330103232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162628491.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 231330103232221 its reverse (122232301033132), we get a palindrome (353562404265353).

The spelling of 231330103232221 in words is "two hundred thirty-one trillion, three hundred thirty billion, one hundred three million, two hundred thirty-two thousand, two hundred twenty-one".