11121001220111 has 8 divisors (see below), whose sum is σ = 11134792594224. Its totient is φ = 11107210445440.

The previous prime is 11121001220089. The next prime is 11121001220143. The reversal of 11121001220111 is 11102210012111.

11121001220111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11121001220111 - 2⁴² = 6722954709007 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 (11121001220411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45605636 + ... + 45848838.

It is an arithmetic number, because the mean of its divisors is an integer number (1391849074278).

Almost surely, 2^{11121001220111} is an apocalyptic number.

11121001220111 is a deficient number, since it is larger than the sum of its proper divisors (13791374113).

11121001220111 is an equidigital number, since it uses as much as digits as its factorization.

11121001220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299721.

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

Adding to 11121001220111 its reverse (11102210012111), we get a palindrome (22223211232222).

The spelling of 11121001220111 in words is "eleven trillion, one hundred twenty-one billion, one million, two hundred twenty thousand, one hundred eleven".