20121120200104 has 64 divisors (see below), whose sum is σ = 49081445130240. Its totient is φ = 7498554106560.

The previous prime is 20121120200063. The next prime is 20121120200261. The reversal of 20121120200104 is 40100202112102.

It is a super-2 number, since 2×20121120200104² (a number of 27 digits) contains 22 as substring.

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, 710076184 + ... + 710104519.

It is an arithmetic number, because the mean of its divisors is an integer number (766897580160).

Almost surely, 2^{20121120200104} is an apocalyptic number.

It is an amenable number.

20121120200104 is an abundant number, since it is smaller than the sum of its proper divisors (28960324930136).

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

20121120200104 is a wasteful number, since it uses less digits than its factorization.

20121120200104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420180750 (or 1420180746 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20121120200104 its reverse (40100202112102), we get a palindrome (60221322312206).

The spelling of 20121120200104 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty million, two hundred thousand, one hundred four".