2121310 has 8 divisors (see below), whose sum is σ = 3818376. Its totient is φ = 848520.

The previous prime is 2121289. The next prime is 2121323. The reversal of 2121310 is 131212.

2121310 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2121310² = 8999912232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 212131 = 2121310 / (2 + 1 + 2 + 1 + 3 + 1 + 0).

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 in 3 ways as a sum of consecutive naturals, for example, 106056 + ... + 106075.

It is an arithmetic number, because the mean of its divisors is an integer number (477297).

2^2121310 is an apocalyptic number.

2121310 is a deficient number, since it is larger than the sum of its proper divisors (1697066).

2121310 is a wasteful number, since it uses less digits than its factorization.

2121310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212138.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2121310 is about 1456.4717642303. The cubic root of 2121310 is about 128.4896205034.

Adding to 2121310 its reverse (131212), we get a palindrome (2252522).

The spelling of 2121310 in words is "two million, one hundred twenty-one thousand, three hundred ten".