2100210121012 has 24 divisors (see below), whose sum is σ = 3686183121600. Its totient is φ = 1047015861696.

The previous prime is 2100210120997. The next prime is 2100210121019. The reversal of 2100210121012 is 2101210120012.

It is a junction number, because it is equal to n+sod(n) for n = 2100210120983 and 2100210121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100210121019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9321763 + ... + 9544405.

It is an arithmetic number, because the mean of its divisors is an integer number (153590963400).

Almost surely, 2^{2100210121012} is an apocalyptic number.

It is an amenable number.

2100210121012 is a deficient number, since it is larger than the sum of its proper divisors (1585973000588).

2100210121012 is a wasteful number, since it uses less digits than its factorization.

2100210121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229575 (or 229573 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2100210121012 its reverse (2101210120012), we get a palindrome (4201420241024).

It can be divided in two parts, 2100210 and 121012, that added together give a palindrome (2221222).

The spelling of 2100210121012 in words is "two trillion, one hundred billion, two hundred ten million, one hundred twenty-one thousand, twelve".