121030560 has 144 divisors (see below), whose sum is σ = 472058496. Its totient is φ = 27661824.

The previous prime is 121030549. The next prime is 121030561. The reversal of 121030560 is 65030121.

121030560 is a `hidden beast` number, since 1 + 2 + 103 + 0 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4077 + ... + 16083.

It is an arithmetic number, because the mean of its divisors is an integer number (3278184).

Almost surely, 2^121030560 is an apocalyptic number.

121030560 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 121030560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236029248).

121030560 is an abundant number, since it is smaller than the sum of its proper divisors (351027936).

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

121030560 is a wasteful number, since it uses less digits than its factorization.

121030560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035 (or 12024 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 121030560 is about 11001.3890032123. The cubic root of 121030560 is about 494.6503806083.

Adding to 121030560 its reverse (65030121), we get a palindrome (186060681).

The spelling of 121030560 in words is "one hundred twenty-one million, thirty thousand, five hundred sixty".