21302022 has 32 divisors (see below), whose sum is σ = 50264064. Its totient is φ = 5889600.

The previous prime is 21301997. The next prime is 21302027. The reversal of 21302022 is 22020312.

It is a super-2 number, since 2×21302022² = 907552282576968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21301989 and 21302007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6879 + ... + 9482.

It is an arithmetic number, because the mean of its divisors is an integer number (1570752).

Almost surely, 2^21302022 is an apocalyptic number.

21302022 is an abundant number, since it is smaller than the sum of its proper divisors (28962042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21302022 is a wasteful number, since it uses less digits than its factorization.

21302022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16404.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 21302022 is about 4615.4113576148. The cubic root of 21302022 is about 277.2087553898.

Adding to 21302022 its reverse (22020312), we get a palindrome (43322334).

The spelling of 21302022 in words is "twenty-one million, three hundred two thousand, twenty-two".