121256801 has 16 divisors (see below), whose sum is σ = 134835840. Its totient is φ = 108514560.

The previous prime is 121256791. The next prime is 121256809. The reversal of 121256801 is 108652121.

121256801 is nontrivially palindromic in base 3.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121256801 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (121256809) 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, 31196 + ... + 34866.

It is an arithmetic number, because the mean of its divisors is an integer number (8427240).

Almost surely, 2^121256801 is an apocalyptic number.

It is an amenable number.

121256801 is a deficient number, since it is larger than the sum of its proper divisors (13579039).

121256801 is a wasteful number, since it uses less digits than its factorization.

121256801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 121256801 is about 11011.6665859442. Note that the first 3 decimals coincide. The cubic root of 121256801 is about 494.9584034699.

The spelling of 121256801 in words is "one hundred twenty-one million, two hundred fifty-six thousand, eight hundred one".