1000200120012 has 108 divisors (see below), whose sum is σ = 2603921582080. Its totient is φ = 323479054656.

The previous prime is 1000200119959. The next prime is 1000200120037. The reversal of 1000200120012 is 2100210020001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1000200119976 and 1000200120003.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 195387189 + ... + 195392307.

Almost surely, 2^{1000200120012} is an apocalyptic number.

1000200120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000200120012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301960791040).

1000200120012 is an abundant number, since it is smaller than the sum of its proper divisors (1603721462068).

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

1000200120012 is a wasteful number, since it uses less digits than its factorization.

1000200120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5932 (or 5544 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000200120012 its reverse (2100210020001), we get a palindrome (3100410140013).

The spelling of 1000200120012 in words is "one trillion, two hundred million, one hundred twenty thousand, twelve".