201011101123 has 8 divisors (see below), whose sum is σ = 243240324192. Its totient is φ = 162160215936.

The previous prime is 201011101079. The next prime is 201011101147. The reversal of 201011101123 is 321101110102.

It is a happy number.

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 201011101123 - 2¹⁷ = 201010970051 is a prime.

It is a super-2 number, since 2×201011101123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201011501123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844584340 + ... + 844584577.

It is an arithmetic number, because the mean of its divisors is an integer number (30405040524).

Almost surely, 2^201011101123 is an apocalyptic number.

201011101123 is a deficient number, since it is larger than the sum of its proper divisors (42229223069).

201011101123 is a wasteful number, since it uses less digits than its factorization.

201011101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689168941.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 201011101123 its reverse (321101110102), we get a palindrome (522112211225).

The spelling of 201011101123 in words is "two hundred one billion, eleven million, one hundred one thousand, one hundred twenty-three".