201100121 has 8 divisors (see below), whose sum is σ = 210797664. Its totient is φ = 191630880.

The previous prime is 201100117. The next prime is 201100129. The reversal of 201100121 is 121001102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201100121 - 2² = 201100117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201100099 and 201100108.

It is not an unprimeable number, because it can be changed into a prime (201100129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55271 + ... + 58796.

It is an arithmetic number, because the mean of its divisors is an integer number (26349708).

Almost surely, 2^201100121 is an apocalyptic number.

It is an amenable number.

201100121 is a deficient number, since it is larger than the sum of its proper divisors (9697543).

201100121 is a wasteful number, since it uses less digits than its factorization.

201100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114151.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 201100121 is about 14180.9774345776. The cubic root of 201100121 is about 585.8738453792.

Adding to 201100121 its reverse (121001102), we get a palindrome (322101223).

The spelling of 201100121 in words is "two hundred one million, one hundred thousand, one hundred twenty-one".