221621040033 has 8 divisors (see below), whose sum is σ = 296438793888. Its totient is φ = 147275323104.

The previous prime is 221621039999. The next prime is 221621040071. The reversal of 221621040033 is 330040126122.

221621040033 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 not a de Polignac number, because 221621040033 - 2⁸ = 221621039777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221621039985 and 221621040012.

It is not an unprimeable number, because it can be changed into a prime (221621040733) 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, 118008135 + ... + 118010012.

It is an arithmetic number, because the mean of its divisors is an integer number (37054849236).

Almost surely, 2^221621040033 is an apocalyptic number.

It is an amenable number.

221621040033 is a deficient number, since it is larger than the sum of its proper divisors (74817753855).

221621040033 is a wasteful number, since it uses less digits than its factorization.

221621040033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236018463.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221621040033 its reverse (330040126122), we get a palindrome (551661166155).

The spelling of 221621040033 in words is "two hundred twenty-one billion, six hundred twenty-one million, forty thousand, thirty-three".