232021221330 has 128 divisors (see below), whose sum is σ = 578780640000. Its totient is φ = 59456775168.

The previous prime is 232021221259. The next prime is 232021221353. The reversal of 232021221330 is 33122120232.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 232021221297 and 232021221306.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 313966101 + ... + 313966839.

It is an arithmetic number, because the mean of its divisors is an integer number (4521723750).

Almost surely, 2^232021221330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 232021221330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289390320000).

232021221330 is an abundant number, since it is smaller than the sum of its proper divisors (346759418670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

232021221330 is a wasteful number, since it uses less digits than its factorization.

232021221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 232021221330 its reverse (33122120232), we get a palindrome (265143341562).

The spelling of 232021221330 in words is "two hundred thirty-two billion, twenty-one million, two hundred twenty-one thousand, three hundred thirty".