21067322 has 4 divisors (see below), whose sum is σ = 31600986. Its totient is φ = 10533660.

The previous prime is 21067303. The next prime is 21067331. The reversal of 21067322 is 22376012.

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

It can be written as a sum of positive squares in only one way, i.e., 19193161 + 1874161 = 4381^2 + 1369^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5266829 + ... + 5266832.

Almost surely, 2^21067322 is an apocalyptic number.

21067322 is a deficient number, since it is larger than the sum of its proper divisors (10533664).

21067322 is a wasteful number, since it uses less digits than its factorization.

21067322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10533663.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 21067322 is about 4589.9152497622. The cubic root of 21067322 is about 276.1869226663.

The spelling of 21067322 in words is "twenty-one million, sixty-seven thousand, three hundred twenty-two".