11201135501 has 4 divisors (see below), whose sum is σ = 11202670332. Its totient is φ = 11199600672.

The previous prime is 11201135399. The next prime is 11201135503. The reversal of 11201135501 is 10553110211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4069164100 + 7131971401 = 63790^2 + 84451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201135501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201135503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756416 + ... + 771081.

It is an arithmetic number, because the mean of its divisors is an integer number (2800667583).

Almost surely, 2^11201135501 is an apocalyptic number.

It is an amenable number.

11201135501 is a deficient number, since it is larger than the sum of its proper divisors (1534831).

11201135501 is an equidigital number, since it uses as much as digits as its factorization.

11201135501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534830.

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 11201135501 its reverse (10553110211), we get a palindrome (21754245712).

The spelling of 11201135501 in words is "eleven billion, two hundred one million, one hundred thirty-five thousand, five hundred one".