21484222 has 4 divisors (see below), whose sum is σ = 32226336. Its totient is φ = 10742110.

The previous prime is 21484213. The next prime is 21484237. The reversal of 21484222 is 22248412.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5371054 + ... + 5371057.

It is an arithmetic number, because the mean of its divisors is an integer number (8056584).

Almost surely, 2^21484222 is an apocalyptic number.

21484222 is a deficient number, since it is larger than the sum of its proper divisors (10742114).

21484222 is a wasteful number, since it uses less digits than its factorization.

21484222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10742113.

The product of its digits is 2048, while the sum is 25.

The square root of 21484222 is about 4635.1075499928. The cubic root of 21484222 is about 277.9968514041.

The spelling of 21484222 in words is "twenty-one million, four hundred eighty-four thousand, two hundred twenty-two".