21450119 has 2 divisors, whose sum is σ = 21450120. Its totient is φ = 21450118.

The previous prime is 21450113. The next prime is 21450137. The reversal of 21450119 is 91105412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21450119 - 2⁴ = 21450103 is a prime.

It is a super-2 number, since 2×21450119² = 920215210228322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21450094 and 21450103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21450113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10725059 + 10725060.

It is an arithmetic number, because the mean of its divisors is an integer number (10725060).

Almost surely, 2^21450119 is an apocalyptic number.

21450119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21450119 is an equidigital number, since it uses as much as digits as its factorization.

21450119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 21450119 is about 4631.4273177931. The cubic root of 21450119 is about 277.8496806515.

The spelling of 21450119 in words is "twenty-one million, four hundred fifty thousand, one hundred nineteen".