12221212021120 has 64 divisors (see below), whose sum is σ = 29227335040800. Its totient is φ = 4886644277248.

The previous prime is 12221212021049. The next prime is 12221212021121. The reversal of 12221212021120 is 2112021212221.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221212021121) 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, 1892980 + ... + 5293939.

Almost surely, 2^{12221212021120} is an apocalyptic number.

12221212021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221212021120 is an abundant number, since it is smaller than the sum of its proper divisors (17006123019680).

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

12221212021120 is an equidigital number, since it uses as much as digits as its factorization.

12221212021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189595 (or 7189583 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221212021120 its reverse (2112021212221), we get a palindrome (14333233233341).

The spelling of 12221212021120 in words is "twelve trillion, two hundred twenty-one billion, two hundred twelve million, twenty-one thousand, one hundred twenty".