201044423001 has 16 divisors (see below), whose sum is σ = 269001768960. Its totient is φ = 133558966800.

The previous prime is 201044422991. The next prime is 201044423003. The reversal of 201044423001 is 100324440102.

It is not a de Polignac number, because 201044423001 - 2¹⁸ = 201044160857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201044423003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231876 + ... + 1385498.

It is an arithmetic number, because the mean of its divisors is an integer number (16812610560).

Almost surely, 2^201044423001 is an apocalyptic number.

It is an amenable number.

201044423001 is a deficient number, since it is larger than the sum of its proper divisors (67957345959).

201044423001 is a wasteful number, since it uses less digits than its factorization.

201044423001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155156.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 201044423001 its reverse (100324440102), we get a palindrome (301368863103).

The spelling of 201044423001 in words is "two hundred one billion, forty-four million, four hundred twenty-three thousand, one".