121444120 has 32 divisors (see below), whose sum is σ = 312285600. Its totient is φ = 41637888.

The previous prime is 121444111. The next prime is 121444129. The reversal of 121444120 is 21444121.

It is an interprime number because it is at equal distance from previous prime (121444111) and next prime (121444129).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121444129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216585 + ... + 217144.

It is an arithmetic number, because the mean of its divisors is an integer number (9758925).

Almost surely, 2^121444120 is an apocalyptic number.

121444120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121444120 is an abundant number, since it is smaller than the sum of its proper divisors (190841480).

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

121444120 is a wasteful number, since it uses less digits than its factorization.

121444120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433747 (or 433743 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 121444120 is about 11020.1687827365. The cubic root of 121444120 is about 495.2131449520.

Adding to 121444120 its reverse (21444121), we get a palindrome (142888241).

Subtracting from 121444120 its reverse (21444121), we obtain a palindrome (99999999).

It can be divided in two parts, 1214441 and 20, that added together give a triangular number (1214461 = T₁₅₅₈).

The spelling of 121444120 in words is "one hundred twenty-one million, four hundred forty-four thousand, one hundred twenty".