121080647 has 16 divisors (see below), whose sum is σ = 133040160. Its totient is φ = 109734912.

The previous prime is 121080629. The next prime is 121080653. The reversal of 121080647 is 746080121.

It is a cyclic number.

It is not a de Polignac number, because 121080647 - 2¹² = 121076551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121080677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52229 + ... + 54497.

It is an arithmetic number, because the mean of its divisors is an integer number (8315010).

Almost surely, 2^121080647 is an apocalyptic number.

121080647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

121080647 is a deficient number, since it is larger than the sum of its proper divisors (11959513).

121080647 is a wasteful number, since it uses less digits than its factorization.

121080647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 121080647 is about 11003.6651621176. The cubic root of 121080647 is about 494.7186061780.

The spelling of 121080647 in words is "one hundred twenty-one million, eighty thousand, six hundred forty-seven".