11100120201 has 12 divisors (see below), whose sum is σ = 16627340912. Its totient is φ = 7400079972.

The previous prime is 11100120151. The next prime is 11100120217. The reversal of 11100120201 is 10202100111.

It is a happy number.

It is not a de Polignac number, because 11100120201 - 2¹⁸ = 11099858057 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 (11100120221) 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, 22839511 + ... + 22839996.

Almost surely, 2^11100120201 is an apocalyptic number.

It is an amenable number.

11100120201 is a deficient number, since it is larger than the sum of its proper divisors (5527220711).

11100120201 is an frugal number, since it uses more digits than its factorization.

11100120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45679522 (or 45679510 counting only the distinct ones).

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

Adding to 11100120201 its reverse (10202100111), we get a palindrome (21302220312).

The spelling of 11100120201 in words is "eleven billion, one hundred million, one hundred twenty thousand, two hundred one".