2121211204 has 12 divisors (see below), whose sum is σ = 4242422464. Its totient is φ = 909090504.

The previous prime is 2121211201. The next prime is 2121211207. The reversal of 2121211204 is 4021121212.

It is an interprime number because it is at equal distance from previous prime (2121211201) and next prime (2121211207).

2121211204 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2121211201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37878744 + ... + 37878799.

Almost surely, 2^2121211204 is an apocalyptic number.

It is an amenable number.

2121211204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2121211204 is a wasteful number, since it uses less digits than its factorization.

2121211204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75757554 (or 75757552 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2121211204 is about 46056.6086897418. The cubic root of 2121211204 is about 1284.8762575206.

Adding to 2121211204 its reverse (4021121212), we get a palindrome (6142332416).

The spelling of 2121211204 in words is "two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred four".