2121602 has 12 divisors (see below), whose sum is σ = 3702150. Its totient is φ = 909216.

The previous prime is 2121601. The next prime is 2121607. The reversal of 2121602 is 2061212.

It can be written as a sum of positive squares in only one way, i.e., 1901641 + 219961 = 1379^2 + 469^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10727 + ... + 10922.

2^2121602 is an apocalyptic number.

2121602 is a deficient number, since it is larger than the sum of its proper divisors (1580548).

2121602 is a wasteful number, since it uses less digits than its factorization.

2121602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21665 (or 21658 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2121602 is about 1456.5720030263. The cubic root of 2121602 is about 128.4955157988.

Adding to 2121602 its reverse (2061212), we get a palindrome (4182814).

The spelling of 2121602 in words is "two million, one hundred twenty-one thousand, six hundred two".