11201000120001 has 12 divisors (see below), whose sum is σ = 16616498677012. Its totient is φ = 7265513591136.

The previous prime is 11201000119997. The next prime is 11201000120003. The reversal of 11201000120001 is 10002100010211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8096528793600 + 3104471326401 = 2845440^2 + 1761951^2 .

It is not a de Polignac number, because 11201000120001 - 2² = 11201000119997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201000120003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16818318166 + ... + 16818318831.

Almost surely, 2^{11201000120001} is an apocalyptic number.

It is an amenable number.

11201000120001 is a deficient number, since it is larger than the sum of its proper divisors (5415498557011).

11201000120001 is a wasteful number, since it uses less digits than its factorization.

11201000120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33636637040 (or 33636637037 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11201000120001 its reverse (10002100010211), we get a palindrome (21203100130212).

The spelling of 11201000120001 in words is "eleven trillion, two hundred one billion, one hundred twenty thousand, one".