2121204244 has 12 divisors (see below), whose sum is σ = 3712432500. Its totient is φ = 1060509248.

The previous prime is 2121204227. The next prime is 2121204299. The reversal of 2121204244 is 4424021212.

It can be written as a sum of positive squares in 2 ways, for example, as 1206867600 + 914336644 = 34740^2 + 30238^2 .

It is a super-2 number, since 2×2121204244² = 8999014889527223072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67902 + ... + 94090.

It is an arithmetic number, because the mean of its divisors is an integer number (309369375).

Almost surely, 2^2121204244 is an apocalyptic number.

It is an amenable number.

2121204244 is a deficient number, since it is larger than the sum of its proper divisors (1591228256).

2121204244 is a wasteful number, since it uses less digits than its factorization.

2121204244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46442 (or 46440 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 2121204244 is about 46056.5331304908. The cubic root of 2121204244 is about 1284.8748522309.

Adding to 2121204244 its reverse (4424021212), we get a palindrome (6545225456).

The spelling of 2121204244 in words is "two billion, one hundred twenty-one million, two hundred four thousand, two hundred forty-four".