2121010204 has 24 divisors (see below), whose sum is σ = 4033164800. Its totient is φ = 972278640.

The previous prime is 2121010189. The next prime is 2121010211. The reversal of 2121010204 is 4020101212.

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, 447774 + ... + 452485.

Almost surely, 2^2121010204 is an apocalyptic number.

It is an amenable number.

2121010204 is a deficient number, since it is larger than the sum of its proper divisors (1912154596).

2121010204 is a wasteful number, since it uses less digits than its factorization.

2121010204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900313 (or 900311 counting only the distinct ones).

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

The square root of 2121010204 is about 46054.4265407789. The cubic root of 2121010204 is about 1284.8356724868.

Adding to 2121010204 its reverse (4020101212), we get a palindrome (6141111416).

The spelling of 2121010204 in words is "two billion, one hundred twenty-one million, ten thousand, two hundred four".