21313022 has 8 divisors (see below), whose sum is σ = 33652200. Its totient is φ = 10095624.

The previous prime is 21313021. The next prime is 21313037. The reversal of 21313022 is 22031312.

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 = 21312988 and 21313006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313021) 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, 280397 + ... + 280472.

It is an arithmetic number, because the mean of its divisors is an integer number (4206525).

Almost surely, 2^21313022 is an apocalyptic number.

21313022 is a deficient number, since it is larger than the sum of its proper divisors (12339178).

21313022 is a wasteful number, since it uses less digits than its factorization.

21313022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560890.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 21313022 is about 4616.6028635784. The cubic root of 21313022 is about 277.2564624665.

Adding to 21313022 its reverse (22031312), we get a palindrome (43344334).

The spelling of 21313022 in words is "twenty-one million, three hundred thirteen thousand, twenty-two".