111200121012011 has 4 divisors (see below), whose sum is σ = 111200149938024. Its totient is φ = 111200092086000.

The previous prime is 111200121011951. The next prime is 111200121012077. The reversal of 111200121012011 is 110210121002111.

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 111200121012011 - 2¹⁰ = 111200121010987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111200121012091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7616105 + ... + 16745306.

It is an arithmetic number, because the mean of its divisors is an integer number (27800037484506).

Almost surely, 2^{111200121012011} is an apocalyptic number.

111200121012011 is a deficient number, since it is larger than the sum of its proper divisors (28926013).

111200121012011 is an equidigital number, since it uses as much as digits as its factorization.

111200121012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28926012.

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

Adding to 111200121012011 its reverse (110210121002111), we get a palindrome (221410242014122).

The spelling of 111200121012011 in words is "one hundred eleven trillion, two hundred billion, one hundred twenty-one million, twelve thousand, eleven".