201121101001 has 8 divisors (see below), whose sum is σ = 206832507200. Its totient is φ = 195456702672.

The previous prime is 201121100993. The next prime is 201121101011. The reversal of 201121101001 is 100101121102.

201121101001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201121101001 - 2³ = 201121100993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121101011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11743290 + ... + 11760403.

It is an arithmetic number, because the mean of its divisors is an integer number (25854063400).

Almost surely, 2^201121101001 is an apocalyptic number.

It is an amenable number.

201121101001 is a deficient number, since it is larger than the sum of its proper divisors (5711406199).

201121101001 is a wasteful number, since it uses less digits than its factorization.

201121101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23503935.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 201121101001 its reverse (100101121102), we get a palindrome (301222222103).

The spelling of 201121101001 in words is "two hundred one billion, one hundred twenty-one million, one hundred one thousand, one".