11111121112201 has 8 divisors (see below), whose sum is σ = 12121247847744. Its totient is φ = 10100998512720.

The previous prime is 11111121112183. The next prime is 11111121112213. The reversal of 11111121112201 is 10221112111111.

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 11111121112201 - 2⁹ = 11111121111689 is a prime.

It is a super-3 number, since 3×11111121112201³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111121112271) 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, 8061996 + ... + 9339058.

It is an arithmetic number, because the mean of its divisors is an integer number (1515155980968).

Almost surely, 2^{11111121112201} is an apocalyptic number.

11111121112201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111121112201 is a deficient number, since it is larger than the sum of its proper divisors (1010126735543).

11111121112201 is a wasteful number, since it uses less digits than its factorization.

11111121112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068031.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11111121112201 its reverse (10221112111111), we get a palindrome (21332233223312).

The spelling of 11111121112201 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-one million, one hundred twelve thousand, two hundred one".