221033411221 has 8 divisors (see below), whose sum is σ = 252632170944. Its totient is φ = 189440291040.

The previous prime is 221033411173. The next prime is 221033411233. The reversal of 221033411221 is 122114330122.

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

It is not a de Polignac number, because 221033411221 - 2⁹ = 221033410709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221033411192 and 221033411201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221033511221) 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, 1325560 + ... + 1482961.

It is an arithmetic number, because the mean of its divisors is an integer number (31579021368).

Almost surely, 2^221033411221 is an apocalyptic number.

It is an amenable number.

221033411221 is a deficient number, since it is larger than the sum of its proper divisors (31598759723).

221033411221 is a wasteful number, since it uses less digits than its factorization.

221033411221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819771.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221033411221 its reverse (122114330122), we get a palindrome (343147741343).

The spelling of 221033411221 in words is "two hundred twenty-one billion, thirty-three million, four hundred eleven thousand, two hundred twenty-one".