12220202111220 has 36 divisors (see below), whose sum is σ = 37067946404580. Its totient is φ = 3258720562944.

The previous prime is 12220202111207. The next prime is 12220202111237. The reversal of 12220202111220 is 2211120202221.

It is a happy number.

12220202111220 is a `hidden beast` number, since 12 + 220 + 2 + 0 + 211 + 1 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2029154666256 + 10191047444964 = 1424484^2 + 3192342^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12220202111193 and 12220202111202.

It is a congruent number.

It is an unprimeable number.

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, 33945005685 + ... + 33945006044.

It is an arithmetic number, because the mean of its divisors is an integer number (1029665177905).

Almost surely, 2^{12220202111220} is an apocalyptic number.

12220202111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220202111220 is an abundant number, since it is smaller than the sum of its proper divisors (24847744293360).

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

12220202111220 is a wasteful number, since it uses less digits than its factorization.

12220202111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67890011744 (or 67890011739 counting only the distinct ones).

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

Adding to 12220202111220 its reverse (2211120202221), we get a palindrome (14431322313441).

The spelling of 12220202111220 in words is "twelve trillion, two hundred twenty billion, two hundred two million, one hundred eleven thousand, two hundred twenty".