233212102221 has 16 divisors (see below), whose sum is σ = 355377641984. Its totient is φ = 133261501104.

The previous prime is 233212102219. The next prime is 233212102229. The reversal of 233212102221 is 122201212332.

It is not a de Polignac number, because 233212102221 - 2¹ = 233212102219 is a prime.

It is a super-3 number, since 3×233212102221³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233212102229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1845366 + ... + 1967688.

It is an arithmetic number, because the mean of its divisors is an integer number (22211102624).

Almost surely, 2^233212102221 is an apocalyptic number.

233212102221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

233212102221 is a deficient number, since it is larger than the sum of its proper divisors (122165539763).

233212102221 is a wasteful number, since it uses less digits than its factorization.

233212102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213120.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 233212102221 its reverse (122201212332), we get a palindrome (355413314553).

The spelling of 233212102221 in words is "two hundred thirty-three billion, two hundred twelve million, one hundred two thousand, two hundred twenty-one".