11121201200111 has 4 divisors (see below), whose sum is σ = 11167347263424. Its totient is φ = 11075055136800.

The previous prime is 11121201200101. The next prime is 11121201200129. The reversal of 11121201200111 is 11100210212111.

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

It is a cyclic number.

It is not a de Polignac number, because 11121201200111 - 2⁶ = 11121201200047 is a prime.

It is a super-2 number, since 2×11121201200111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121201200101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23073031295 + ... + 23073031776.

It is an arithmetic number, because the mean of its divisors is an integer number (2791836815856).

Almost surely, 2^{11121201200111} is an apocalyptic number.

11121201200111 is a deficient number, since it is larger than the sum of its proper divisors (46146063313).

11121201200111 is an equidigital number, since it uses as much as digits as its factorization.

11121201200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46146063312.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11121201200111 its reverse (11100210212111), we get a palindrome (22221411412222).

The spelling of 11121201200111 in words is "eleven trillion, one hundred twenty-one billion, two hundred one million, two hundred thousand, one hundred eleven".