233214531221 has 32 divisors (see below), whose sum is σ = 284876697600. Its totient is φ = 190478227632.

The previous prime is 233214531211. The next prime is 233214531227. The reversal of 233214531221 is 122135412332.

It is not a de Polignac number, because 233214531221 - 2¹⁸ = 233214269077 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 (233214531227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2018606 + ... + 2131008.

It is an arithmetic number, because the mean of its divisors is an integer number (8902396800).

Almost surely, 2^233214531221 is an apocalyptic number.

It is an amenable number.

233214531221 is a deficient number, since it is larger than the sum of its proper divisors (51662166379).

233214531221 is a wasteful number, since it uses less digits than its factorization.

233214531221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112710 (or 112696 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

Adding to 233214531221 its reverse (122135412332), we get a palindrome (355349943553).

The spelling of 233214531221 in words is "two hundred thirty-three billion, two hundred fourteen million, five hundred thirty-one thousand, two hundred twenty-one".