221001231033 has 32 divisors (see below), whose sum is σ = 358563611520. Its totient is φ = 133418926080.

The previous prime is 221001231019. The next prime is 221001231047. The reversal of 221001231033 is 330132100122.

It is an interprime number because it is at equal distance from previous prime (221001231019) and next prime (221001231047).

It is not a de Polignac number, because 221001231033 - 2⁵ = 221001231001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221001230997 and 221001231015.

It is not an unprimeable number, because it can be changed into a prime (221001231133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1371360 + ... + 1524017.

It is an arithmetic number, because the mean of its divisors is an integer number (11205112860).

Almost surely, 2^221001231033 is an apocalyptic number.

It is an amenable number.

221001231033 is a deficient number, since it is larger than the sum of its proper divisors (137562380487).

221001231033 is a wasteful number, since it uses less digits than its factorization.

221001231033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895654 (or 2895648 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 221001231033 its reverse (330132100122), we get a palindrome (551133331155).

The spelling of 221001231033 in words is "two hundred twenty-one billion, one million, two hundred thirty-one thousand, thirty-three".