121244130 has 144 divisors (see below), whose sum is σ = 386268480. Its totient is φ = 26236224.

The previous prime is 121244129. The next prime is 121244143. The reversal of 121244130 is 31442121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 83067 + ... + 84513.

It is an arithmetic number, because the mean of its divisors is an integer number (2682420).

Almost surely, 2^121244130 is an apocalyptic number.

121244130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121244130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193134240).

121244130 is an abundant number, since it is smaller than the sum of its proper divisors (265024350).

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

121244130 is a wasteful number, since it uses less digits than its factorization.

121244130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121244130 is about 11011.0912265770. The cubic root of 121244130 is about 494.9411622750.

Adding to 121244130 its reverse (31442121), we get a palindrome (152686251).

The spelling of 121244130 in words is "one hundred twenty-one million, two hundred forty-four thousand, one hundred thirty".