21701119 has 4 divisors (see below), whose sum is σ = 23673960. Its totient is φ = 19728280.

The previous prime is 21701117. The next prime is 21701123. The reversal of 21701119 is 91110712.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21701119 - 2¹ = 21701117 is a prime.

It is a super-2 number, since 2×21701119² = 941877131704322, 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 21701119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21701117) 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, 986404 + ... + 986425.

It is an arithmetic number, because the mean of its divisors is an integer number (5918490).

Almost surely, 2^21701119 is an apocalyptic number.

21701119 is a deficient number, since it is larger than the sum of its proper divisors (1972841).

21701119 is a wasteful number, since it uses less digits than its factorization.

21701119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972840.

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

The square root of 21701119 is about 4658.4459855192. The cubic root of 21701119 is about 278.9292395587.

The spelling of 21701119 in words is "twenty-one million, seven hundred one thousand, one hundred nineteen".