231221332002033 has 48 divisors (see below), whose sum is σ = 356379548967936. Its totient is φ = 143956935175680.

The previous prime is 231221332002029. The next prime is 231221332002043. The reversal of 231221332002033 is 330200233122132.

231221332002033 is a `hidden beast` number, since 2 + 3 + 1 + 221 + 33 + 200 + 203 + 3 = 666.

It is not a de Polignac number, because 231221332002033 - 2² = 231221332002029 is a prime.

It is a super-2 number, since 2×231221332002033² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231221332001988 and 231221332002006.

It is not an unprimeable number, because it can be changed into a prime (231221332002043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1636410 + ... + 21566652.

It is an arithmetic number, because the mean of its divisors is an integer number (7424573936832).

Almost surely, 2^{231221332002033} is an apocalyptic number.

It is an amenable number.

231221332002033 is a deficient number, since it is larger than the sum of its proper divisors (125158216965903).

231221332002033 is a wasteful number, since it uses less digits than its factorization.

231221332002033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19930854 (or 19930851 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 231221332002033 its reverse (330200233122132), we get a palindrome (561421565124165).

The spelling of 231221332002033 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, three hundred thirty-two million, two thousand, thirty-three".