231033330212221 has 8 divisors (see below), whose sum is σ = 232325760427200. Its totient is φ = 229740919344480.

The previous prime is 231033330212159. The next prime is 231033330212249. The reversal of 231033330212221 is 122212033330132.

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 231033330212221 - 2¹⁷ = 231033330081149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231033330212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231033330272221) 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, 19453041 + ... + 28991161.

It is an arithmetic number, because the mean of its divisors is an integer number (29040720053400).

Almost surely, 2^{231033330212221} is an apocalyptic number.

It is an amenable number.

231033330212221 is a deficient number, since it is larger than the sum of its proper divisors (1292430214979).

231033330212221 is a wasteful number, since it uses less digits than its factorization.

231033330212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9673619.

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

Adding to 231033330212221 its reverse (122212033330132), we get a palindrome (353245363542353).

The spelling of 231033330212221 in words is "two hundred thirty-one trillion, thirty-three billion, three hundred thirty million, two hundred twelve thousand, two hundred twenty-one".