200121120012 has 48 divisors (see below), whose sum is σ = 509853197952. Its totient is φ = 60588718080.

The previous prime is 200121120011. The next prime is 200121120041. The reversal of 200121120012 is 210021121002.

200121120012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 200121120012.

It is not an unprimeable number, because it can be changed into a prime (200121120011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526773 + ... + 823244.

It is an arithmetic number, because the mean of its divisors is an integer number (10621941624).

Almost surely, 2^200121120012 is an apocalyptic number.

200121120012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

200121120012 is an abundant number, since it is smaller than the sum of its proper divisors (309732077940).

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

200121120012 is a wasteful number, since it uses less digits than its factorization.

200121120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351158 (or 1351156 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 200121120012 its reverse (210021121002), we get a palindrome (410142241014).

The spelling of 200121120012 in words is "two hundred billion, one hundred twenty-one million, one hundred twenty thousand, twelve".