2100021202028 has 12 divisors (see below), whose sum is σ = 3675047294352. Its totient is φ = 1050007689360.

The previous prime is 2100021202021. The next prime is 2100021202043. The reversal of 2100021202028 is 8202021200012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2100021202021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2234198 + ... + 3031778.

It is an arithmetic number, because the mean of its divisors is an integer number (306253941196).

Almost surely, 2^{2100021202028} is an apocalyptic number.

It is an amenable number.

2100021202028 is a deficient number, since it is larger than the sum of its proper divisors (1575026092324).

2100021202028 is a wasteful number, since it uses less digits than its factorization.

2100021202028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455832 (or 1455830 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The spelling of 2100021202028 in words is "two trillion, one hundred billion, twenty-one million, two hundred two thousand, twenty-eight".