121113680 has 20 divisors (see below), whose sum is σ = 281589492. Its totient is φ = 48445440.

The previous prime is 121113679. The next prime is 121113697. The reversal of 121113680 is 86311121.

It can be written as a sum of positive squares in 2 ways, for example, as 14776336 + 106337344 = 3844^2 + 10312^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756881 + ... + 757040.

Almost surely, 2^121113680 is an apocalyptic number.

121113680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121113680 is an abundant number, since it is smaller than the sum of its proper divisors (160475812).

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

121113680 is a wasteful number, since it uses less digits than its factorization.

121113680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513934 (or 1513928 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 121113680 is about 11005.1660596285. The cubic root of 121113680 is about 494.7635914948.

The spelling of 121113680 in words is "one hundred twenty-one million, one hundred thirteen thousand, six hundred eighty".