2100021003124 has 48 divisors (see below), whose sum is σ = 4159465744896. Its totient is φ = 919073635200.

The previous prime is 2100021003071. The next prime is 2100021003137. The reversal of 2100021003124 is 4213001200012.

It is a junction number, because it is equal to n+sod(n) for n = 2100021003098 and 2100021003107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3638919 + ... + 4176334.

It is an arithmetic number, because the mean of its divisors is an integer number (86655536352).

Almost surely, 2^{2100021003124} is an apocalyptic number.

It is an amenable number.

2100021003124 is a deficient number, since it is larger than the sum of its proper divisors (2059444741772).

2100021003124 is a wasteful number, since it uses less digits than its factorization.

2100021003124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7815496 (or 7815494 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2100021003124 its reverse (4213001200012), we get a palindrome (6313022203136).

The spelling of 2100021003124 in words is "two trillion, one hundred billion, twenty-one million, three thousand, one hundred twenty-four".