21143119 has 8 divisors (see below), whose sum is σ = 21464352. Its totient is φ = 20824320.

The previous prime is 21143113. The next prime is 21143137. The reversal of 21143119 is 91134112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21143119 is a prime.

It is a super-2 number, since 2×21143119² = 894062962096322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21143119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21143113) 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 in 7 ways as a sum of consecutive naturals, for example, 23559 + ... + 24439.

It is an arithmetic number, because the mean of its divisors is an integer number (2683044).

Almost surely, 2^21143119 is an apocalyptic number.

21143119 is a deficient number, since it is larger than the sum of its proper divisors (321233).

21143119 is a wasteful number, since it uses less digits than its factorization.

21143119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

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

The square root of 21143119 is about 4598.1647425902. The cubic root of 21143119 is about 276.5177523163.

The spelling of 21143119 in words is "twenty-one million, one hundred forty-three thousand, one hundred nineteen".