21339101 has 8 divisors (see below), whose sum is σ = 25448064. Its totient is φ = 17495280.

The previous prime is 21339091. The next prime is 21339103. The reversal of 21339101 is 10193312.

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

It is a cyclic number.

It is not a de Polignac number, because 21339101 - 2⁶ = 21339037 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21339103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66110 + ... + 66431.

It is an arithmetic number, because the mean of its divisors is an integer number (3181008).

Almost surely, 2^21339101 is an apocalyptic number.

It is an amenable number.

21339101 is a deficient number, since it is larger than the sum of its proper divisors (4108963).

21339101 is a wasteful number, since it uses less digits than its factorization.

21339101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132571.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 21339101 is about 4619.4264795535. The cubic root of 21339101 is about 277.3695017176.

The spelling of 21339101 in words is "twenty-one million, three hundred thirty-nine thousand, one hundred one".