2121499 has 4 divisors (see below), whose sum is σ = 2133936. Its totient is φ = 2109064.

The previous prime is 2121479. The next prime is 2121503. The reversal of 2121499 is 9941212.

It is a happy number.

2121499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121499 - 2¹⁵ = 2088731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121479) by changing a digit.

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, 5959 + ... + 6304.

It is an arithmetic number, because the mean of its divisors is an integer number (533484).

2^2121499 is an apocalyptic number.

2121499 is a deficient number, since it is larger than the sum of its proper divisors (12437).

2121499 is a wasteful number, since it uses less digits than its factorization.

2121499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12436.

The product of its digits is 1296, while the sum is 28.

The square root of 2121499 is about 1456.5366456083. The cubic root of 2121499 is about 128.4934363557.

It can be divided in two parts, 212 and 1499, that added together give a triangular number (1711 = T₅₈).

The spelling of 2121499 in words is "two million, one hundred twenty-one thousand, four hundred ninety-nine".