201011440123 has 8 divisors (see below), whose sum is σ = 218906150400. Its totient is φ = 183464200128.

The previous prime is 201011440109. The next prime is 201011440153. The reversal of 201011440123 is 321044110102.

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 201011440123 - 2⁹ = 201011439611 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 201011440123.

It is not an unprimeable number, because it can be changed into a prime (201011440153) 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, 86866363 + ... + 86868676.

It is an arithmetic number, because the mean of its divisors is an integer number (27363268800).

Almost surely, 2^201011440123 is an apocalyptic number.

201011440123 is a deficient number, since it is larger than the sum of its proper divisors (17894710277).

201011440123 is a wasteful number, since it uses less digits than its factorization.

201011440123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173735141.

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

Adding to 201011440123 its reverse (321044110102), we get a palindrome (522055550225).

The spelling of 201011440123 in words is "two hundred one billion, eleven million, four hundred forty thousand, one hundred twenty-three".