20321122 has 4 divisors (see below), whose sum is σ = 30481686. Its totient is φ = 10160560.

The previous prime is 20321087. The next prime is 20321131. The reversal of 20321122 is 22112302.

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., 17048641 + 3272481 = 4129^2 + 1809^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080279 + ... + 5080282.

Almost surely, 2^20321122 is an apocalyptic number.

20321122 is a deficient number, since it is larger than the sum of its proper divisors (10160564).

20321122 is a wasteful number, since it uses less digits than its factorization.

20321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160563.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20321122 is about 4507.8955178664. The cubic root of 20321122 is about 272.8868203892.

Adding to 20321122 its reverse (22112302), we get a palindrome (42433424).

The spelling of 20321122 in words is "twenty million, three hundred twenty-one thousand, one hundred twenty-two".