21335022 has 16 divisors (see below), whose sum is σ = 47411280. Its totient is φ = 7111656.

The previous prime is 21334997. The next prime is 21335023. The reversal of 21335022 is 22053312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 21334986 and 21335004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21335023) 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, 197493 + ... + 197600.

It is an arithmetic number, because the mean of its divisors is an integer number (2963205).

Almost surely, 2^21335022 is an apocalyptic number.

21335022 is an abundant number, since it is smaller than the sum of its proper divisors (26076258).

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

21335022 is a wasteful number, since it uses less digits than its factorization.

21335022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395104 (or 395098 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 21335022 is about 4618.9849534286. The cubic root of 21335022 is about 277.3518273976.

Adding to 21335022 its reverse (22053312), we get a palindrome (43388334).

The spelling of 21335022 in words is "twenty-one million, three hundred thirty-five thousand, twenty-two".