2102004021012 has 96 divisors (see below), whose sum is σ = 5690913500160. Its totient is φ = 591458208000.

The previous prime is 2102004021011. The next prime is 2102004021041. The reversal of 2102004021012 is 2101204002012.

It is a junction number, because it is equal to n+sod(n) for n = 2102004020982 and 2102004021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102004021011) 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 31 ways as a sum of consecutive naturals, for example, 1316383 + ... + 2436569.

It is an arithmetic number, because the mean of its divisors is an integer number (59280348960).

Almost surely, 2^{2102004021012} 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 2102004021012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2845456750080).

2102004021012 is an abundant number, since it is smaller than the sum of its proper divisors (3588909479148).

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

2102004021012 is a wasteful number, since it uses less digits than its factorization.

2102004021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120541 (or 1120539 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2102004021012 its reverse (2101204002012), we get a palindrome (4203208023024).

The spelling of 2102004021012 in words is "two trillion, one hundred two billion, four million, twenty-one thousand, twelve".