2121201204 has 12 divisors (see below), whose sum is σ = 4949469504. Its totient is φ = 707067064.

The previous prime is 2121201193. The next prime is 2121201209. The reversal of 2121201204 is 4021021212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121201209) 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, 88383372 + ... + 88383395.

It is an arithmetic number, because the mean of its divisors is an integer number (412455792).

Almost surely, 2^2121201204 is an apocalyptic number.

It is an amenable number.

2121201204 is an abundant number, since it is smaller than the sum of its proper divisors (2828268300).

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

2121201204 is a wasteful number, since it uses less digits than its factorization.

2121201204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176766774 (or 176766772 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2121201204 is about 46056.5001275607. The cubic root of 2121201204 is about 1284.8742384253.

Adding to 2121201204 its reverse (4021021212), we get a palindrome (6142222416).

The spelling of 2121201204 in words is "two billion, one hundred twenty-one million, two hundred one thousand, two hundred four".