11111021200111 has 16 divisors (see below), whose sum is σ = 12745918660608. Its totient is φ = 9488082384000.

The previous prime is 11111021200073. The next prime is 11111021200121. The reversal of 11111021200111 is 11100212011111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111021200111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11111021200091 and 11111021200100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111021200121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9886 + ... + 4714036.

It is an arithmetic number, because the mean of its divisors is an integer number (796619916288).

Almost surely, 2^{11111021200111} is an apocalyptic number.

11111021200111 is a deficient number, since it is larger than the sum of its proper divisors (1634897460497).

11111021200111 is an equidigital number, since it uses as much as digits as its factorization.

11111021200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4705422.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11111021200111 its reverse (11100212011111), we get a palindrome (22211233211222).

The spelling of 11111021200111 in words is "eleven trillion, one hundred eleven billion, twenty-one million, two hundred thousand, one hundred eleven".