20012321333220 has 48 divisors (see below), whose sum is σ = 56041044964800. Its totient is φ = 5335995666816.

The previous prime is 20012321333201. The next prime is 20012321333243. The reversal of 20012321333220 is 2233312321002.

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, 18961795 + ... + 19989354.

It is an arithmetic number, because the mean of its divisors is an integer number (1167521770100).

Almost surely, 2^{20012321333220} is an apocalyptic number.

20012321333220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012321333220 is an abundant number, since it is smaller than the sum of its proper divisors (36028723631580).

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

20012321333220 is a wasteful number, since it uses less digits than its factorization.

20012321333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38959724 (or 38959722 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20012321333220 its reverse (2233312321002), we get a palindrome (22245633654222).

The spelling of 20012321333220 in words is "twenty trillion, twelve billion, three hundred twenty-one million, three hundred thirty-three thousand, two hundred twenty".