2102002012120 has 64 divisors (see below), whose sum is σ = 4954936089600. Its totient is φ = 801533715840.

The previous prime is 2102002012109. The next prime is 2102002012127. The reversal of 2102002012120 is 212102002012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102002012120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102002012127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12567390 + ... + 12733549.

It is an arithmetic number, because the mean of its divisors is an integer number (77420876400).

Almost surely, 2^{2102002012120} is an apocalyptic number.

2102002012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102002012120 is an abundant number, since it is smaller than the sum of its proper divisors (2852934077480).

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

2102002012120 is a wasteful number, since it uses less digits than its factorization.

2102002012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25301048 (or 25301044 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2102002012120 its reverse (212102002012), we get a palindrome (2314104014132).

The spelling of 2102002012120 in words is "two trillion, one hundred two billion, two million, twelve thousand, one hundred twenty".