121200201 has 12 divisors (see below), whose sum is σ = 176346612. Its totient is φ = 80209536.

The previous prime is 121200181. The next prime is 121200227. The reversal of 121200201 is 102002121.

It can be written as a sum of positive squares in 2 ways, for example, as 39388176 + 81812025 = 6276^2 + 9045^2 .

It is not a de Polignac number, because 121200201 - 2⁷ = 121200073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (121202201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47916 + ... + 50381.

It is an arithmetic number, because the mean of its divisors is an integer number (14695551).

Almost surely, 2^121200201 is an apocalyptic number.

It is an amenable number.

121200201 is a deficient number, since it is larger than the sum of its proper divisors (55146411).

121200201 is a wasteful number, since it uses less digits than its factorization.

121200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98440 (or 98437 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 121200201 is about 11009.0962844368. The cubic root of 121200201 is about 494.8813795960.

Adding to 121200201 its reverse (102002121), we get a palindrome (223202322).

The spelling of 121200201 in words is "one hundred twenty-one million, two hundred thousand, two hundred one".