21422119 has 2 divisors, whose sum is σ = 21422120. Its totient is φ = 21422118.

The previous prime is 21422117. The next prime is 21422129. The reversal of 21422119 is 91122412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21422119 - 2¹ = 21422117 is a prime.

It is a super-2 number, since 2×21422119² = 917814364900322, which contains 22 as substring.

Together with 21422117, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21422119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21422117) 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, 10711059 + 10711060.

It is an arithmetic number, because the mean of its divisors is an integer number (10711060).

Almost surely, 2^21422119 is an apocalyptic number.

21422119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21422119 is an equidigital number, since it uses as much as digits as its factorization.

21422119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 22.

The square root of 21422119 is about 4628.4035044495. The cubic root of 21422119 is about 277.7287306054.

The spelling of 21422119 in words is "twenty-one million, four hundred twenty-two thousand, one hundred nineteen".