233220212221 has 8 divisors (see below), whose sum is σ = 257675529024. Its totient is φ = 209957837760.

The previous prime is 233220212213. The next prime is 233220212231. The reversal of 233220212221 is 122212022332.

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 233220212221 - 2³ = 233220212213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233220212192 and 233220212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233220212231) 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, 298235175 + ... + 298235956.

It is an arithmetic number, because the mean of its divisors is an integer number (32209441128).

Almost surely, 2^233220212221 is an apocalyptic number.

It is an amenable number.

233220212221 is a deficient number, since it is larger than the sum of its proper divisors (24455316803).

233220212221 is a wasteful number, since it uses less digits than its factorization.

233220212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596471171.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 233220212221 its reverse (122212022332), we get a palindrome (355432234553).

The spelling of 233220212221 in words is "two hundred thirty-three billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-one".