20023031312220 has 48 divisors (see below), whose sum is σ = 56467829335680. Its totient is φ = 5301061525056.

The previous prime is 20023031312209. The next prime is 20023031312233. The reversal of 20023031312220 is 2221313032002.

It is a happy number.

It is a congruent number.

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, 1200413202 + ... + 1200429881.

It is an arithmetic number, because the mean of its divisors is an integer number (1176413111160).

Almost surely, 2^{20023031312220} is an apocalyptic number.

20023031312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023031312220 is an abundant number, since it is smaller than the sum of its proper divisors (36444798023460).

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

20023031312220 is a wasteful number, since it uses less digits than its factorization.

20023031312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400843234 (or 2400843232 counting only the distinct ones).

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

Adding to 20023031312220 its reverse (2221313032002), we get a palindrome (22244344344222).

The spelling of 20023031312220 in words is "twenty trillion, twenty-three billion, thirty-one million, three hundred twelve thousand, two hundred twenty".