12221130220 has 72 divisors (see below), whose sum is σ = 29253223440. Its totient is φ = 4274899200.

The previous prime is 12221130203. The next prime is 12221130223. The reversal of 12221130220 is 2203112221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12221130194 and 12221130203.

It is not an unprimeable number, because it can be changed into a prime (12221130223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30931 + ... + 159370.

It is an arithmetic number, because the mean of its divisors is an integer number (406294770).

Almost surely, 2^12221130220 is an apocalyptic number.

12221130220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221130220 is an abundant number, since it is smaller than the sum of its proper divisors (17032093220).

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

12221130220 is a wasteful number, since it uses less digits than its factorization.

12221130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190355 (or 190340 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12221130220 its reverse (2203112221), we get a palindrome (14424242441).

The spelling of 12221130220 in words is "twelve billion, two hundred twenty-one million, one hundred thirty thousand, two hundred twenty".