2102110120212 has 96 divisors (see below), whose sum is σ = 5234739256320. Its totient is φ = 654613850880.

The previous prime is 2102110120189. The next prime is 2102110120217. The reversal of 2102110120212 is 2120210112012.

It is a junction number, because it is equal to n+sod(n) for n = 2102110120191 and 2102110120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102110120217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172142787 + ... + 172154997.

It is an arithmetic number, because the mean of its divisors is an integer number (54528533920).

Almost surely, 2^{2102110120212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102110120212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2617369628160).

2102110120212 is an abundant number, since it is smaller than the sum of its proper divisors (3132629136108).

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

2102110120212 is a wasteful number, since it uses less digits than its factorization.

2102110120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22653 (or 22651 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2102110120212 its reverse (2120210112012), we get a palindrome (4222320232224).

The spelling of 2102110120212 in words is "two trillion, one hundred two billion, one hundred ten million, one hundred twenty thousand, two hundred twelve".