12220021220020 has 48 divisors (see below), whose sum is σ = 27024886707840. Its totient is φ = 4628652045696.

The previous prime is 12220021219961. The next prime is 12220021220027. The reversal of 12220021220020 is 2002212002221.

It is a junction number, because it is equal to n+sod(n) for n = 12220021219976 and 12220021220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220021220027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6424752 + ... + 8106631.

It is an arithmetic number, because the mean of its divisors is an integer number (563018473080).

Almost surely, 2^{12220021220020} is an apocalyptic number.

12220021220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220021220020 is an abundant number, since it is smaller than the sum of its proper divisors (14804865487820).

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

12220021220020 is a wasteful number, since it uses less digits than its factorization.

12220021220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14533624 (or 14533622 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12220021220020 its reverse (2002212002221), we get a palindrome (14222233222241).

The spelling of 12220021220020 in words is "twelve trillion, two hundred twenty billion, twenty-one million, two hundred twenty thousand, twenty".