121223221120 has 64 divisors (see below), whose sum is σ = 294550165440. Its totient is φ = 47694366720.

The previous prime is 121223221103. The next prime is 121223221157. The reversal of 121223221120 is 21122322121.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1513512 + ... + 1591591.

It is an arithmetic number, because the mean of its divisors is an integer number (4602346335).

Almost surely, 2^121223221120 is an apocalyptic number.

121223221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121223221120 is an abundant number, since it is smaller than the sum of its proper divisors (173326944320).

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

121223221120 is an equidigital number, since it uses as much as digits as its factorization.

121223221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105183 (or 3105171 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121223221120 its reverse (21122322121), we get a palindrome (142345543241).

The spelling of 121223221120 in words is "one hundred twenty-one billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty".