12221110020 has 96 divisors (see below), whose sum is σ = 39167606016. Its totient is φ = 2789107200.

The previous prime is 12221109977. The next prime is 12221110021. The reversal of 12221110020 is 2001112221.

12221110020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12221109978 and 12221110005.

It is not an unprimeable number, because it can be changed into a prime (12221110021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255610 + ... + 299630.

It is an arithmetic number, because the mean of its divisors is an integer number (407995896).

Almost surely, 2^12221110020 is an apocalyptic number.

12221110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12221110020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19583803008).

12221110020 is an abundant number, since it is smaller than the sum of its proper divisors (26946495996).

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

12221110020 is a wasteful number, since it uses less digits than its factorization.

12221110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44701 (or 44699 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12221110020 its reverse (2001112221), we get a palindrome (14222222241).

It can be divided in two parts, 122211 and 10020, that added together give a palindrome (132231).

The spelling of 12221110020 in words is "twelve billion, two hundred twenty-one million, one hundred ten thousand, twenty".