12221022120220 has 24 divisors (see below), whose sum is σ = 25702972723008. Its totient is φ = 4881013368000.

The previous prime is 12221022120173. The next prime is 12221022120221. The reversal of 12221022120220 is 2202122012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221022120221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462203956 + ... + 462230395.

It is an arithmetic number, because the mean of its divisors is an integer number (1070957196792).

Almost surely, 2^{12221022120220} is an apocalyptic number.

12221022120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221022120220 is an abundant number, since it is smaller than the sum of its proper divisors (13481950602788).

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

12221022120220 is a wasteful number, since it uses less digits than its factorization.

12221022120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924435021 (or 924435019 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12221022120220 its reverse (2202122012221), we get a palindrome (14423144132441).

The spelling of 12221022120220 in words is "twelve trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty thousand, two hundred twenty".