2100122001312 has 48 divisors (see below), whose sum is σ = 5513207535360. Its totient is φ = 699991488512.

The previous prime is 2100122001311. The next prime is 2100122001319. The reversal of 2100122001312 is 2131002210012.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 2100122001291 and 2100122001300.

It is not an unprimeable number, because it can be changed into a prime (2100122001311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618193 + ... + 2140655.

It is an arithmetic number, because the mean of its divisors is an integer number (114858490320).

Almost surely, 2^{2100122001312} is an apocalyptic number.

It is an amenable number.

2100122001312 is an abundant number, since it is smaller than the sum of its proper divisors (3413085534048).

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

2100122001312 is a wasteful number, since it uses less digits than its factorization.

2100122001312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536845 (or 1536837 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2100122001312 its reverse (2131002210012), we get a palindrome (4231124211324).

The spelling of 2100122001312 in words is "two trillion, one hundred billion, one hundred twenty-two million, one thousand, three hundred twelve".