2121208 has 8 divisors (see below), whose sum is σ = 3977280. Its totient is φ = 1060600.

The previous prime is 2121199. The next prime is 2121239. The reversal of 2121208 is 8021212.

2121208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2121191 and 2121200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132568 + ... + 132583.

It is an arithmetic number, because the mean of its divisors is an integer number (497160).

2^2121208 is an apocalyptic number.

It is an amenable number.

2121208 is a deficient number, since it is larger than the sum of its proper divisors (1856072).

2121208 is a wasteful number, since it uses less digits than its factorization.

2121208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265157 (or 265153 counting only the distinct ones).

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

The square root of 2121208 is about 1456.4367476825. The cubic root of 2121208 is about 128.4875610603.

The spelling of 2121208 in words is "two million, one hundred twenty-one thousand, two hundred eight".