20323323122220 has 288 divisors, whose sum is σ = 66679362247680. Its totient is φ = 4994237399040.

The previous prime is 20323323122209. The next prime is 20323323122231. The reversal of 20323323122220 is 2222132332302.

20323323122220 is a `hidden beast` number, since 2 + 0 + 323 + 3 + 2 + 312 + 2 + 2 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (20323323122209) and next prime (20323323122231).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25812780 + ... + 26588460.

It is an arithmetic number, because the mean of its divisors is an integer number (231525563360).

Almost surely, 2^{20323323122220} is an apocalyptic number.

20323323122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323323122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33339681123840).

20323323122220 is an abundant number, since it is smaller than the sum of its proper divisors (46356039125460).

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

20323323122220 is a wasteful number, since it uses less digits than its factorization.

20323323122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775925 (or 775920 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20323323122220 its reverse (2222132332302), we get a palindrome (22545455454522).

The spelling of 20323323122220 in words is "twenty trillion, three hundred twenty-three billion, three hundred twenty-three million, one hundred twenty-two thousand, two hundred twenty".