121065100 has 72 divisors (see below), whose sum is σ = 295293600. Its totient is φ = 42746880.

The previous prime is 121065089. The next prime is 121065121. The reversal of 121065100 is 1560121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27876 + ... + 31924.

It is an arithmetic number, because the mean of its divisors is an integer number (4101300).

Almost surely, 2^121065100 is an apocalyptic number.

121065100 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 121065100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147646800).

121065100 is an abundant number, since it is smaller than the sum of its proper divisors (174228500).

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

121065100 is a wasteful number, since it uses less digits than its factorization.

121065100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 121065100 is about 11002.9586930062. The cubic root of 121065100 is about 494.6974309817.

The spelling of 121065100 in words is "one hundred twenty-one million, sixty-five thousand, one hundred".