232003121221 has 4 divisors (see below), whose sum is σ = 242090213472. Its totient is φ = 221916028972.

The previous prime is 232003121197. The next prime is 232003121239. The reversal of 232003121221 is 122121300232.

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 not a de Polignac number, because 232003121221 - 2²¹ = 232001024069 is a prime.

It is a super-3 number, since 3×232003121221³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232003121291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5043546091 + ... + 5043546136.

It is an arithmetic number, because the mean of its divisors is an integer number (60522553368).

Almost surely, 2^232003121221 is an apocalyptic number.

It is an amenable number.

232003121221 is a deficient number, since it is larger than the sum of its proper divisors (10087092251).

232003121221 is a wasteful number, since it uses less digits than its factorization.

232003121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087092250.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 232003121221 its reverse (122121300232), we get a palindrome (354124421453).

The spelling of 232003121221 in words is "two hundred thirty-two billion, three million, one hundred twenty-one thousand, two hundred twenty-one".