111100002011021 has 4 divisors (see below), whose sum is σ = 111169051112700. Its totient is φ = 111030952909344.

The previous prime is 111100002011017. The next prime is 111100002011023. The reversal of 111100002011021 is 120110200001111.

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 106489727416996 + 4610274594025 = 10319386^2 + 2147155^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100002011021 - 2² = 111100002011017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111100002010993 and 111100002011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100002011023) 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, 34524548426 + ... + 34524551643.

It is an arithmetic number, because the mean of its divisors is an integer number (27792262778175).

Almost surely, 2^{111100002011021} is an apocalyptic number.

It is an amenable number.

111100002011021 is a deficient number, since it is larger than the sum of its proper divisors (69049101679).

111100002011021 is an equidigital number, since it uses as much as digits as its factorization.

111100002011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69049101678.

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

Adding to 111100002011021 its reverse (120110200001111), we get a palindrome (231210202012132).

The spelling of 111100002011021 in words is "one hundred eleven trillion, one hundred billion, two million, eleven thousand, twenty-one".