231221031132201 has 8 divisors (see below), whose sum is σ = 336321499828704. Its totient is φ = 140133958261920.

The previous prime is 231221031132173. The next prime is 231221031132209. The reversal of 231221031132201 is 102231130122132.

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

It is not a de Polignac number, because 231221031132201 - 2¹¹ = 231221031130153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231221031132209) 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, 3503348956516 + ... + 3503348956581.

It is an arithmetic number, because the mean of its divisors is an integer number (42040187478588).

Almost surely, 2^{231221031132201} is an apocalyptic number.

It is an amenable number.

231221031132201 is a deficient number, since it is larger than the sum of its proper divisors (105100468696503).

231221031132201 is a wasteful number, since it uses less digits than its factorization.

231221031132201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7006697913111.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 231221031132201 its reverse (102231130122132), we get a palindrome (333452161254333).

The spelling of 231221031132201 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, thirty-one million, one hundred thirty-two thousand, two hundred one".