232120203322421 has 4 divisors (see below), whose sum is σ = 232120384969644. Its totient is φ = 232120021675200.

The previous prime is 232120203322387. The next prime is 232120203322453. The reversal of 232120203322421 is 124223302021232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98152889241796 + 133967314080625 = 9907214^2 + 11574425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232120203322421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232120203327421) 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, 88893140 + ... + 91467101.

It is an arithmetic number, because the mean of its divisors is an integer number (58030096242411).

Almost surely, 2^{232120203322421} is an apocalyptic number.

It is an amenable number.

232120203322421 is a deficient number, since it is larger than the sum of its proper divisors (181647223).

232120203322421 is a wasteful number, since it uses less digits than its factorization.

232120203322421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181647222.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 232120203322421 its reverse (124223302021232), we get a palindrome (356343505343653).

The spelling of 232120203322421 in words is "two hundred thirty-two trillion, one hundred twenty billion, two hundred three million, three hundred twenty-two thousand, four hundred twenty-one".