201123201101 has 8 divisors (see below), whose sum is σ = 201487184640. Its totient is φ = 200759521248.

The previous prime is 201123201073. The next prime is 201123201109. The reversal of 201123201101 is 101102321102.

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 201123201101 - 2¹⁸ = 201122938957 is a prime.

It is a super-2 number, since 2×201123201101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201123201109) 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, 1271345 + ... + 1420761.

It is an arithmetic number, because the mean of its divisors is an integer number (25185898080).

Almost surely, 2^201123201101 is an apocalyptic number.

It is an amenable number.

201123201101 is a deficient number, since it is larger than the sum of its proper divisors (363983539).

201123201101 is a wasteful number, since it uses less digits than its factorization.

201123201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151843.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 201123201101 its reverse (101102321102), we get a palindrome (302225522203).

The spelling of 201123201101 in words is "two hundred one billion, one hundred twenty-three million, two hundred one thousand, one hundred one".