21301022 has 8 divisors (see below), whose sum is σ = 33053400. Its totient is φ = 10283224.

The previous prime is 21300997. The next prime is 21301031. The reversal of 21301022 is 22010312.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 21300994 and 21301012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183572 + ... + 183687.

It is an arithmetic number, because the mean of its divisors is an integer number (4131675).

Almost surely, 2^21301022 is an apocalyptic number.

21301022 is a deficient number, since it is larger than the sum of its proper divisors (11752378).

21301022 is a wasteful number, since it uses less digits than its factorization.

21301022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367290.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 21301022 is about 4615.3030236378. The cubic root of 21301022 is about 277.2044175685.

Adding to 21301022 its reverse (22010312), we get a palindrome (43311334).

The spelling of 21301022 in words is "twenty-one million, three hundred one thousand, twenty-two".