12221010120220 has 48 divisors (see below), whose sum is σ = 27997674632928. Its totient is φ = 4443932021760.

The previous prime is 12221010120217. The next prime is 12221010120223. The reversal of 12221010120220 is 2202101012221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12221010120217) and next prime (12221010120223).

It is a junction number, because it is equal to n+sod(n) for n = 12221010120194 and 12221010120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221010120223) 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, 14332912 + ... + 15161608.

It is an arithmetic number, because the mean of its divisors is an integer number (583284888186).

Almost surely, 2^{12221010120220} is an apocalyptic number.

12221010120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221010120220 is an abundant number, since it is smaller than the sum of its proper divisors (15776664512708).

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

12221010120220 is a wasteful number, since it uses less digits than its factorization.

12221010120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895750 (or 895748 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221010120220 its reverse (2202101012221), we get a palindrome (14423111132441).

The spelling of 12221010120220 in words is "twelve trillion, two hundred twenty-one billion, ten million, one hundred twenty thousand, two hundred twenty".