111200121101 has 4 divisors (see below), whose sum is σ = 111211362204. Its totient is φ = 111188880000.

The previous prime is 111200121091. The next prime is 111200121113. The reversal of 111200121101 is 101121002111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 67028692201 + 44171428900 = 258899^2 + 210170^2 .

It is a cyclic number.

It is not a de Polignac number, because 111200121101 - 2⁶ = 111200121037 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 (111200121001) 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, 5605700 + ... + 5625501.

It is an arithmetic number, because the mean of its divisors is an integer number (27802840551).

Almost surely, 2^111200121101 is an apocalyptic number.

It is an amenable number.

111200121101 is a deficient number, since it is larger than the sum of its proper divisors (11241103).

111200121101 is an equidigital number, since it uses as much as digits as its factorization.

111200121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11241102.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111200121101 its reverse (101121002111), we get a palindrome (212321123212).

The spelling of 111200121101 in words is "one hundred eleven billion, two hundred million, one hundred twenty-one thousand, one hundred one".