233424220221 has 24 divisors (see below), whose sum is σ = 343112729856. Its totient is φ = 152878782240.

The previous prime is 233424220199. The next prime is 233424220333. The reversal of 233424220221 is 122022424332.

233424220221 is a `hidden beast` number, since 2 + 33 + 424 + 2 + 202 + 2 + 1 = 666.

It is not a de Polignac number, because 233424220221 - 2³⁰ = 232350478397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233424224221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193516 + ... + 710138.

It is an arithmetic number, because the mean of its divisors is an integer number (14296363744).

Almost surely, 2^233424220221 is an apocalyptic number.

It is an amenable number.

233424220221 is a deficient number, since it is larger than the sum of its proper divisors (109688509635).

233424220221 is a wasteful number, since it uses less digits than its factorization.

233424220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517513 (or 517510 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 233424220221 its reverse (122022424332), we get a palindrome (355446644553).

The spelling of 233424220221 in words is "two hundred thirty-three billion, four hundred twenty-four million, two hundred twenty thousand, two hundred twenty-one".