234505724221 has 4 divisors (see below), whose sum is σ = 234506995744. Its totient is φ = 234504452700.

The previous prime is 234505724197. The next prime is 234505724237. The reversal of 234505724221 is 122427505432.

234505724221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234505724221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234505724021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300015 + ... + 747676.

It is an arithmetic number, because the mean of its divisors is an integer number (58626748936).

Almost surely, 2^234505724221 is an apocalyptic number.

It is an amenable number.

234505724221 is a deficient number, since it is larger than the sum of its proper divisors (1271523).

234505724221 is a wasteful number, since it uses less digits than its factorization.

234505724221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271522.

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 234505724221 in words is "two hundred thirty-four billion, five hundred five million, seven hundred twenty-four thousand, two hundred twenty-one".