2101021204 has 24 divisors (see below), whose sum is σ = 3870619200. Its totient is φ = 995938944.

The previous prime is 2101021193. The next prime is 2101021217. The reversal of 2101021204 is 4021201012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90654 + ... + 111445.

It is an arithmetic number, because the mean of its divisors is an integer number (161275800).

Almost surely, 2^2101021204 is an apocalyptic number.

It is an amenable number.

2101021204 is a deficient number, since it is larger than the sum of its proper divisors (1769597996).

2101021204 is a wasteful number, since it uses less digits than its factorization.

2101021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202239 (or 202237 counting only the distinct ones).

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

The square root of 2101021204 is about 45836.8978444222. The cubic root of 2101021204 is about 1280.7867079470.

Adding to 2101021204 its reverse (4021201012), we get a palindrome (6122222216).

The spelling of 2101021204 in words is "two billion, one hundred one million, twenty-one thousand, two hundred four".