20323221330 has 32 divisors (see below), whose sum is σ = 48823953984. Its totient is φ = 5414167616.

The previous prime is 20323221277. The next prime is 20323221379. The reversal of 20323221330 is 3312232302.

It is a junction number, because it is equal to n+sod(n) for n = 20323221297 and 20323221306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303984 + ... + 364763.

It is an arithmetic number, because the mean of its divisors is an integer number (1525748562).

Almost surely, 2^20323221330 is an apocalyptic number.

20323221330 is an abundant number, since it is smaller than the sum of its proper divisors (28500732654).

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

20323221330 is a wasteful number, since it uses less digits than its factorization.

20323221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669770.

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

Adding to 20323221330 its reverse (3312232302), we get a palindrome (23635453632).

The spelling of 20323221330 in words is "twenty billion, three hundred twenty-three million, two hundred twenty-one thousand, three hundred thirty".