121207680 has 192 divisors, whose sum is σ = 456833520. Its totient is φ = 29368320.

The previous prime is 121207643. The next prime is 121207693. The reversal of 121207680 is 86702121.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent 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, 62404 + ... + 64316.

Almost surely, 2^121207680 is an apocalyptic number.

121207680 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 121207680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228416760).

121207680 is an abundant number, since it is smaller than the sum of its proper divisors (335625840).

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

121207680 is a wasteful number, since it uses less digits than its factorization.

121207680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 121207680 is about 11009.4359528543. The cubic root of 121207680 is about 494.8915587367.

The spelling of 121207680 in words is "one hundred twenty-one million, two hundred seven thousand, six hundred eighty".