20012220322 has 4 divisors (see below), whose sum is σ = 30018330486. Its totient is φ = 10006110160.

The previous prime is 20012220311. The next prime is 20012220323. The reversal of 20012220322 is 22302221002.

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., 20002727761 + 9492561 = 141431^2 + 3081^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20012220296 and 20012220305.

It is not an unprimeable number, because it can be changed into a prime (20012220323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003055079 + ... + 5003055082.

Almost surely, 2^20012220322 is an apocalyptic number.

20012220322 is a deficient number, since it is larger than the sum of its proper divisors (10006110164).

20012220322 is a wasteful number, since it uses less digits than its factorization.

20012220322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006110163.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20012220322 its reverse (22302221002), we get a palindrome (42314441324).

The spelling of 20012220322 in words is "twenty billion, twelve million, two hundred twenty thousand, three hundred twenty-two".