233430440221 has 16 divisors (see below), whose sum is σ = 258128870400. Its totient is φ = 209316884400.

The previous prime is 233430440213. The next prime is 233430440249. The reversal of 233430440221 is 122044034332.

It is a cyclic number.

It is not a de Polignac number, because 233430440221 - 2³ = 233430440213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 233430440221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233430440291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753706 + ... + 1017316.

It is an arithmetic number, because the mean of its divisors is an integer number (16133054400).

Almost surely, 2^233430440221 is an apocalyptic number.

It is an amenable number.

233430440221 is a deficient number, since it is larger than the sum of its proper divisors (24698430179).

233430440221 is a wasteful number, since it uses less digits than its factorization.

233430440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264720.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 233430440221 its reverse (122044034332), we get a palindrome (355474474553).

The spelling of 233430440221 in words is "two hundred thirty-three billion, four hundred thirty million, four hundred forty thousand, two hundred twenty-one".