121100060720 has 20 divisors (see below), whose sum is σ = 281557641360. Its totient is φ = 48440024256.

The previous prime is 121100060663. The next prime is 121100060761. The reversal of 121100060720 is 27060001121.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121100060692 and 121100060701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756875300 + ... + 756875459.

It is an arithmetic number, because the mean of its divisors is an integer number (14077882068).

Almost surely, 2^121100060720 is an apocalyptic number.

121100060720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100060720 is an abundant number, since it is smaller than the sum of its proper divisors (160457580640).

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

121100060720 is a wasteful number, since it uses less digits than its factorization.

121100060720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513750772 (or 1513750766 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 121100060720 its reverse (27060001121), we get a palindrome (148160061841).

The spelling of 121100060720 in words is "one hundred twenty-one billion, one hundred million, sixty thousand, seven hundred twenty".