20321330222100 has 144 divisors (see below), whose sum is σ = 64025099006400. Its totient is φ = 4956781777920.

The previous prime is 20321330222009. The next prime is 20321330222111. The reversal of 20321330222100 is 122203312302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61302729 + ... + 61633328.

It is an arithmetic number, because the mean of its divisors is an integer number (444618743100).

Almost surely, 2^{20321330222100} is an apocalyptic number.

20321330222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321330222100 is an abundant number, since it is smaller than the sum of its proper divisors (43703768784300).

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

20321330222100 is a wasteful number, since it uses less digits than its factorization.

20321330222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122936122 (or 122936115 counting only the distinct ones).

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

Adding to 20321330222100 its reverse (122203312302), we get a palindrome (20443533534402).

The spelling of 20321330222100 in words is "twenty trillion, three hundred twenty-one billion, three hundred thirty million, two hundred twenty-two thousand, one hundred".