2121619 has 2 divisors, whose sum is σ = 2121620. Its totient is φ = 2121618.

The previous prime is 2121607. The next prime is 2121631. The reversal of 2121619 is 9161212.

2121619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2121607) and next prime (2121631).

It is a cyclic number.

It is not a de Polignac number, because 2121619 - 2¹⁹ = 1597331 is a prime.

It is a super-2 number, since 2×2121619² = 9002534362322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121619.

It is not a weakly prime, because it can be changed into another prime (2122619) 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 as a sum of consecutive naturals, namely, 1060809 + 1060810.

It is an arithmetic number, because the mean of its divisors is an integer number (1060810).

2^2121619 is an apocalyptic number.

2121619 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121619 is an equidigital number, since it uses as much as digits as its factorization.

2121619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 22.

The square root of 2121619 is about 1456.5778386341. The cubic root of 2121619 is about 128.4958590014.

The spelling of 2121619 in words is "two million, one hundred twenty-one thousand, six hundred nineteen".