232002021421 has 4 divisors (see below), whose sum is σ = 237397417312. Its totient is φ = 226606625532.

The previous prime is 232002021389. The next prime is 232002021439. The reversal of 232002021421 is 124120200232.

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 not a de Polignac number, because 232002021421 - 2⁵ = 232002021389 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 (232002021451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2697697881 + ... + 2697697966.

It is an arithmetic number, because the mean of its divisors is an integer number (59349354328).

Almost surely, 2^232002021421 is an apocalyptic number.

It is an amenable number.

232002021421 is a deficient number, since it is larger than the sum of its proper divisors (5395395891).

232002021421 is an equidigital number, since it uses as much as digits as its factorization.

232002021421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395395890.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 232002021421 its reverse (124120200232), we get a palindrome (356122221653).

The spelling of 232002021421 in words is "two hundred thirty-two billion, two million, twenty-one thousand, four hundred twenty-one".