121005201 has 32 divisors (see below), whose sum is σ = 176359680. Its totient is φ = 73508864.

The previous prime is 121005193. The next prime is 121005211. The reversal of 121005201 is 102500121.

It is a cyclic number.

It is not a de Polignac number, because 121005201 - 2³ = 121005193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121005211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240316 + ... + 240818.

It is an arithmetic number, because the mean of its divisors is an integer number (5511240).

Almost surely, 2^121005201 is an apocalyptic number.

It is an amenable number.

121005201 is a deficient number, since it is larger than the sum of its proper divisors (55354479).

121005201 is a wasteful number, since it uses less digits than its factorization.

121005201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 121005201 is about 11000.2364065505. The cubic root of 121005201 is about 494.6158308902.

Adding to 121005201 its reverse (102500121), we get a palindrome (223505322).

The spelling of 121005201 in words is "one hundred twenty-one million, five thousand, two hundred one".