20001212201120 has 96 divisors (see below), whose sum is σ = 48098939857920. Its totient is φ = 7858283397120.

The previous prime is 20001212201093. The next prime is 20001212201141. The reversal of 20001212201120 is 2110221210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001212201095 and 20001212201104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1659896 + ... + 6538935.

It is an arithmetic number, because the mean of its divisors is an integer number (501030623520).

Almost surely, 2^{20001212201120} is an apocalyptic number.

20001212201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001212201120 is an abundant number, since it is smaller than the sum of its proper divisors (28097727656800).

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

20001212201120 is a wasteful number, since it uses less digits than its factorization.

20001212201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8199118 (or 8199110 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001212201120 its reverse (2110221210002), we get a palindrome (22111433411122).

The spelling of 20001212201120 in words is "twenty trillion, one billion, two hundred twelve million, two hundred one thousand, one hundred twenty".