22021322 has 4 divisors (see below), whose sum is σ = 33031986. Its totient is φ = 11010660.

The previous prime is 22021319. The next prime is 22021331. The reversal of 22021322 is 22312022.

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., 21911761 + 109561 = 4681^2 + 331^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22021297 and 22021306.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505329 + ... + 5505332.

Almost surely, 2^22021322 is an apocalyptic number.

22021322 is a deficient number, since it is larger than the sum of its proper divisors (11010664).

22021322 is a wasteful number, since it uses less digits than its factorization.

22021322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010663.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22021322 is about 4692.6881422059. The cubic root of 22021322 is about 280.2944266893.

Adding to 22021322 its reverse (22312022), we get a palindrome (44333344).

The spelling of 22021322 in words is "twenty-two million, twenty-one thousand, three hundred twenty-two".