121143120 has 80 divisors (see below), whose sum is σ = 429198720. Its totient is φ = 27689472.

The previous prime is 121143101. The next prime is 121143149. The reversal of 121143120 is 21341121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×121143120³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121143120.

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, 34375 + ... + 37734.

It is an arithmetic number, because the mean of its divisors is an integer number (5364984).

Almost surely, 2^121143120 is an apocalyptic number.

121143120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121143120 is an abundant number, since it is smaller than the sum of its proper divisors (308055600).

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

121143120 is a wasteful number, since it uses less digits than its factorization.

121143120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72132 (or 72126 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121143120 is about 11006.5035320032. The cubic root of 121143120 is about 494.8036768650.

Adding to 121143120 its reverse (21341121), we get a palindrome (142484241).

The spelling of 121143120 in words is "one hundred twenty-one million, one hundred forty-three thousand, one hundred twenty".