121127130 has 64 divisors (see below), whose sum is σ = 330549120. Its totient is φ = 31546368.

The previous prime is 121127119. The next prime is 121127189. The reversal of 121127130 is 31721121.

It is a happy number.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6394 + ... + 16826.

It is an arithmetic number, because the mean of its divisors is an integer number (5164830).

Almost surely, 2^121127130 is an apocalyptic number.

121127130 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 121127130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165274560).

121127130 is an abundant number, since it is smaller than the sum of its proper divisors (209421990).

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

121127130 is a wasteful number, since it uses less digits than its factorization.

121127130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10492 (or 10486 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 121127130 is about 11005.7771193133. Note that the first 3 decimals coincide. The cubic root of 121127130 is about 494.7819057596.

Adding to 121127130 its reverse (31721121), we get a palindrome (152848251).

The spelling of 121127130 in words is "one hundred twenty-one million, one hundred twenty-seven thousand, one hundred thirty".