201200121161 has 8 divisors (see below), whose sum is σ = 219911040384. Its totient is φ = 182951200080.

The previous prime is 201200121137. The next prime is 201200121163. The reversal of 201200121161 is 161121002102.

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 201200121161 - 2³⁴ = 184020251977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201200121163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115498625 + ... + 115500366.

It is an arithmetic number, because the mean of its divisors is an integer number (27488880048).

Almost surely, 2^201200121161 is an apocalyptic number.

It is an amenable number.

201200121161 is a deficient number, since it is larger than the sum of its proper divisors (18710919223).

201200121161 is a wasteful number, since it uses less digits than its factorization.

201200121161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230999071.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 201200121161 its reverse (161121002102), we get a palindrome (362321123263).

The spelling of 201200121161 in words is "two hundred one billion, two hundred million, one hundred twenty-one thousand, one hundred sixty-one".