11101200991 has 8 divisors (see below), whose sum is σ = 11953437840. Its totient is φ = 10271100288.

The previous prime is 11101200883. The next prime is 11101201037. The reversal of 11101200991 is 19900210111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11101200991 - 2¹⁵ = 11101168223 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 (11101203991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5532996 + ... + 5535001.

It is an arithmetic number, because the mean of its divisors is an integer number (1494179730).

Almost surely, 2^11101200991 is an apocalyptic number.

11101200991 is a deficient number, since it is larger than the sum of its proper divisors (852236849).

11101200991 is a wasteful number, since it uses less digits than its factorization.

11101200991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11068073.

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 11101200991 in words is "eleven billion, one hundred one million, two hundred thousand, nine hundred ninety-one".