2100111200012 has 12 divisors (see below), whose sum is σ = 4200222400080. Its totient is φ = 900047657136.

The previous prime is 2100111200003. The next prime is 2100111200017. The reversal of 2100111200012 is 2100021110012.

2100111200012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2100111199966 and 2100111200002.

It is not an unprimeable number, because it can be changed into a prime (2100111200017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37501985687 + ... + 37501985742.

It is an arithmetic number, because the mean of its divisors is an integer number (350018533340).

Almost surely, 2^{2100111200012} is an apocalyptic number.

It is an amenable number.

2100111200012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2100111200012 is a wasteful number, since it uses less digits than its factorization.

2100111200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75003971440 (or 75003971438 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2100111200012 its reverse (2100021110012), we get a palindrome (4200132310024).

The spelling of 2100111200012 in words is "two trillion, one hundred billion, one hundred eleven million, two hundred thousand, twelve".