2121002 has 24 divisors (see below), whose sum is σ = 3585036. Its totient is φ = 935424.

The previous prime is 2120981. The next prime is 2121011. The reversal of 2121002 is 2001212.

It can be written as a sum of positive squares in 6 ways, for example, as 654481 + 1466521 = 809^2 + 1211^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21818 + ... + 21914.

2^2121002 is an apocalyptic number.

2121002 is a deficient number, since it is larger than the sum of its proper divisors (1464034).

2121002 is a wasteful number, since it uses less digits than its factorization.

2121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2121002 is about 1456.3660254208. The cubic root of 2121002 is about 128.4834015917.

Adding to 2121002 its reverse (2001212), we get a palindrome (4122214).

The spelling of 2121002 in words is "two million, one hundred twenty-one thousand, two".