121223303111220 has 192 divisors, whose sum is σ = 369025034305536. Its totient is φ = 29643625820160.

The previous prime is 121223303111179. The next prime is 121223303111249. The reversal of 121223303111220 is 22111303322121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8663869 + ... + 17818788.

It is an arithmetic number, because the mean of its divisors is an integer number (1922005387008).

Almost surely, 2^{121223303111220} is an apocalyptic number.

121223303111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121223303111220 is an abundant number, since it is smaller than the sum of its proper divisors (247801731194316).

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

121223303111220 is a wasteful number, since it uses less digits than its factorization.

121223303111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26482830 (or 26482828 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 121223303111220 its reverse (22111303322121), we get a palindrome (143334606433341).

The spelling of 121223303111220 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, three hundred three million, one hundred eleven thousand, two hundred twenty".