23220321330 has 64 divisors (see below), whose sum is σ = 57017530368. Its totient is φ = 6049368000.

The previous prime is 23220321323. The next prime is 23220321349. The reversal of 23220321330 is 3312302232.

It is a junction number, because it is equal to n+sod(n) for n = 23220321297 and 23220321306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779205 + ... + 808455.

It is an arithmetic number, because the mean of its divisors is an integer number (890898912).

Almost surely, 2^23220321330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23220321330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28508765184).

23220321330 is an abundant number, since it is smaller than the sum of its proper divisors (33797209038).

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

23220321330 is a wasteful number, since it uses less digits than its factorization.

23220321330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29871.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 23220321330 its reverse (3312302232), we get a palindrome (26532623562).

The spelling of 23220321330 in words is "twenty-three billion, two hundred twenty million, three hundred twenty-one thousand, three hundred thirty".