201121120243 has 8 divisors (see below), whose sum is σ = 202087393200. Its totient is φ = 200155613088.

The previous prime is 201121120181. The next prime is 201121120279. The reversal of 201121120243 is 342021121102.

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 201121120243 - 2¹⁷ = 201120989171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201121120243.

It is not an unprimeable number, because it can be changed into a prime (201121120283) 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, 338580 + ... + 718942.

It is an arithmetic number, because the mean of its divisors is an integer number (25260924150).

Almost surely, 2^201121120243 is an apocalyptic number.

201121120243 is a deficient number, since it is larger than the sum of its proper divisors (966272957).

201121120243 is a wasteful number, since it uses less digits than its factorization.

201121120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382901.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201121120243 its reverse (342021121102), we get a palindrome (543142241345).

The spelling of 201121120243 in words is "two hundred one billion, one hundred twenty-one million, one hundred twenty thousand, two hundred forty-three".