20220111222021 has 12 divisors (see below), whose sum is σ = 30288561666272. Its totient is φ = 13480074147852.

The previous prime is 20220111221977. The next prime is 20220111222041. The reversal of 20220111222021 is 12022211102202.

It is a happy number.

It is not a de Polignac number, because 20220111222021 - 2⁹ = 20220111221509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20220111221985 and 20220111222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220111222041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41605166881 + ... + 41605167366.

Almost surely, 2^{20220111222021} is an apocalyptic number.

It is an amenable number.

20220111222021 is a deficient number, since it is larger than the sum of its proper divisors (10068450444251).

20220111222021 is an frugal number, since it uses more digits than its factorization.

20220111222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83210334262 (or 83210334250 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20220111222021 its reverse (12022211102202), we get a palindrome (32242322324223).

The spelling of 20220111222021 in words is "twenty trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, twenty-one".