20021220322 has 16 divisors (see below), whose sum is σ = 32208917760. Its totient is φ = 9304796592.

The previous prime is 20021220217. The next prime is 20021220377. The reversal of 20021220322 is 22302212002.

It is a junction number, because it is equal to n+sod(n) for n = 20021220296 and 20021220305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4968498 + ... + 4972525.

It is an arithmetic number, because the mean of its divisors is an integer number (2013057360).

Almost surely, 2^20021220322 is an apocalyptic number.

20021220322 is a deficient number, since it is larger than the sum of its proper divisors (12187697438).

20021220322 is a wasteful number, since it uses less digits than its factorization.

20021220322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9941097.

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

Adding to 20021220322 its reverse (22302212002), we get a palindrome (42323432324).

The spelling of 20021220322 in words is "twenty billion, twenty-one million, two hundred twenty thousand, three hundred twenty-two".