21234119 has 4 divisors (see below), whose sum is σ = 21966360. Its totient is φ = 20501880.

The previous prime is 21234113. The next prime is 21234127. The reversal of 21234119 is 91143212.

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 21234119 - 2¹² = 21230023 is a prime.

It is a super-2 number, since 2×21234119² = 901775619412322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21234094 and 21234103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366077 + ... + 366134.

It is an arithmetic number, because the mean of its divisors is an integer number (5491590).

Almost surely, 2^21234119 is an apocalyptic number.

21234119 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21234119 is a deficient number, since it is larger than the sum of its proper divisors (732241).

21234119 is an equidigital number, since it uses as much as digits as its factorization.

21234119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732240.

The product of its digits is 432, while the sum is 23.

The square root of 21234119 is about 4608.0493703952. The cubic root of 21234119 is about 276.9138953964.

The spelling of 21234119 in words is "twenty-one million, two hundred thirty-four thousand, one hundred nineteen".