21322101 has 8 divisors (see below), whose sum is σ = 29197984. Its totient is φ = 13830480.

The previous prime is 21322099. The next prime is 21322117. The reversal of 21322101 is 10122312.

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

It is not a de Polignac number, because 21322101 - 2¹ = 21322099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322181) 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, 95935 + ... + 96156.

It is an arithmetic number, because the mean of its divisors is an integer number (3649748).

Almost surely, 2^21322101 is an apocalyptic number.

It is an amenable number.

21322101 is a deficient number, since it is larger than the sum of its proper divisors (7875883).

21322101 is a wasteful number, since it uses less digits than its factorization.

21322101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192131.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 21322101 is about 4617.5860576713. The cubic root of 21322101 is about 277.2958257890.

Adding to 21322101 its reverse (10122312), we get a palindrome (31444413).

The spelling of 21322101 in words is "twenty-one million, three hundred twenty-two thousand, one hundred one".