221012321033 has 8 divisors (see below), whose sum is σ = 252657356352. Its totient is φ = 189385247376.

The previous prime is 221012321011. The next prime is 221012321069. The reversal of 221012321033 is 330123210122.

221012321033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221012321033 - 2²⁸ = 220743885577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221012320996 and 221012321014.

It is not an unprimeable number, because it can be changed into a prime (221012320033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4464035 + ... + 4513272.

It is an arithmetic number, because the mean of its divisors is an integer number (31582169544).

Almost surely, 2^221012321033 is an apocalyptic number.

It is an amenable number.

221012321033 is a deficient number, since it is larger than the sum of its proper divisors (31645035319).

221012321033 is an equidigital number, since it uses as much as digits as its factorization.

221012321033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8980831.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221012321033 its reverse (330123210122), we get a palindrome (551135531155).

The spelling of 221012321033 in words is "two hundred twenty-one billion, twelve million, three hundred twenty-one thousand, thirty-three".