21710119 has 4 divisors (see below), whose sum is σ = 21781144. Its totient is φ = 21639096.

The previous prime is 21710113. The next prime is 21710123. The reversal of 21710119 is 91101712.

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 21710119 - 2³ = 21710111 is a prime.

It is a super-2 number, since 2×21710119² = 942658533988322, 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 21710119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21710111) 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, 35052 + ... + 35665.

It is an arithmetic number, because the mean of its divisors is an integer number (5445286).

Almost surely, 2^21710119 is an apocalyptic number.

21710119 is a deficient number, since it is larger than the sum of its proper divisors (71025).

21710119 is an equidigital number, since it uses as much as digits as its factorization.

21710119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71024.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 21710119 is about 4659.4118727582. The cubic root of 21710119 is about 278.9677938870.

The spelling of 21710119 in words is "twenty-one million, seven hundred ten thousand, one hundred nineteen".