121210880 has 192 divisors, whose sum is σ = 353808000. Its totient is φ = 38928384.

The previous prime is 121210829. The next prime is 121210889. The reversal of 121210880 is 88012121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121210889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1361876 + ... + 1361964.

It is an arithmetic number, because the mean of its divisors is an integer number (1842750).

Almost surely, 2^121210880 is an apocalyptic number.

121210880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121210880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176904000).

121210880 is an abundant number, since it is smaller than the sum of its proper divisors (232597120).

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

121210880 is an equidigital number, since it uses as much as digits as its factorization.

121210880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 121210880 is about 11009.5812817745. The cubic root of 121210880 is about 494.8959139037.

The spelling of 121210880 in words is "one hundred twenty-one million, two hundred ten thousand, eight hundred eighty".