121127660 has 48 divisors (see below), whose sum is σ = 279417600. Its totient is φ = 43902144.

The previous prime is 121127621. The next prime is 121127681. The reversal of 121127660 is 66721121.

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 15 ways as a sum of consecutive naturals, for example, 1811 + ... + 15669.

It is an arithmetic number, because the mean of its divisors is an integer number (5821200).

Almost surely, 2^121127660 is an apocalyptic number.

121127660 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 121127660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139708800).

121127660 is an abundant number, since it is smaller than the sum of its proper divisors (158289940).

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

121127660 is a wasteful number, since it uses less digits than its factorization.

121127660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13910 (or 13908 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 121127660 is about 11005.8011975503. The cubic root of 121127660 is about 494.7826274091.

Adding to 121127660 its reverse (66721121), we get a palindrome (187848781).

The spelling of 121127660 in words is "one hundred twenty-one million, one hundred twenty-seven thousand, six hundred sixty".