201111043445 has 16 divisors (see below), whose sum is σ = 260407995120. Its totient is φ = 148220972544.

The previous prime is 201111043433. The next prime is 201111043447. The reversal of 201111043445 is 544340111102.

It can be written as a sum of positive squares in 8 ways, for example, as 64625521 + 201046417924 = 8039^2 + 448382^2 .

It is a cyclic number.

It is not a de Polignac number, because 201111043445 - 2⁴ = 201111043429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111043447) 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, 3006224 + ... + 3072393.

It is an arithmetic number, because the mean of its divisors is an integer number (16275499695).

Almost surely, 2^201111043445 is an apocalyptic number.

It is an amenable number.

201111043445 is a deficient number, since it is larger than the sum of its proper divisors (59296951675).

201111043445 is a wasteful number, since it uses less digits than its factorization.

201111043445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079144.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 201111043445 its reverse (544340111102), we get a palindrome (745451154547).

The spelling of 201111043445 in words is "two hundred one billion, one hundred eleven million, forty-three thousand, four hundred forty-five".