12220220222021 has 24 divisors (see below), whose sum is σ = 14264171513280. Its totient is φ = 10438521475200.

The previous prime is 12220220221991. The next prime is 12220220222059. The reversal of 12220220222021 is 12022202202221.

It is not a de Polignac number, because 12220220222021 - 2⁴² = 7822173710917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220220221984 and 12220220222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220220282021) 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 23 ways as a sum of consecutive naturals, for example, 71858390 + ... + 72028248.

It is an arithmetic number, because the mean of its divisors is an integer number (594340479720).

Almost surely, 2^{12220220222021} is an apocalyptic number.

It is an amenable number.

12220220222021 is a deficient number, since it is larger than the sum of its proper divisors (2043951291259).

12220220222021 is a wasteful number, since it uses less digits than its factorization.

12220220222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174905 (or 174898 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12220220222021 its reverse (12022202202221), we get a palindrome (24242422424242).

The spelling of 12220220222021 in words is "twelve trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-two thousand, twenty-one".