12211202122220 has 48 divisors (see below), whose sum is σ = 25829312140800. Its totient is φ = 4849096263360.

The previous prime is 12211202122219. The next prime is 12211202122243. The reversal of 12211202122220 is 2222120211221.

12211202122220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12211202122220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12211202122192 and 12211202122201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61146491 + ... + 61345869.

It is an arithmetic number, because the mean of its divisors is an integer number (538110669600).

Almost surely, 2^{12211202122220} is an apocalyptic number.

12211202122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211202122220 is an abundant number, since it is smaller than the sum of its proper divisors (13618110018580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211202122220 is a wasteful number, since it uses less digits than its factorization.

12211202122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221558 (or 221556 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12211202122220 its reverse (2222120211221), we get a palindrome (14433322333441).

The spelling of 12211202122220 in words is "twelve trillion, two hundred eleven billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty".