121448220 has 48 divisors (see below), whose sum is σ = 345141888. Its totient is φ = 31901760.

The previous prime is 121448189. The next prime is 121448233. The reversal of 121448220 is 22844121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11086 + ... + 19125.

It is an arithmetic number, because the mean of its divisors is an integer number (7190456).

Almost surely, 2^121448220 is an apocalyptic number.

121448220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121448220 is an abundant number, since it is smaller than the sum of its proper divisors (223693668).

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

121448220 is a wasteful number, since it uses less digits than its factorization.

121448220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30290 (or 30288 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 121448220 is about 11020.3548037257. The cubic root of 121448220 is about 495.2187177511.

The spelling of 121448220 in words is "one hundred twenty-one million, four hundred forty-eight thousand, two hundred twenty".