11112201111021 has 4 divisors (see below), whose sum is σ = 14816268148032. Its totient is φ = 7408134074012.

The previous prime is 11112201110963. The next prime is 11112201111047. The reversal of 11112201111021 is 12011110221111.

11112201111021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11112201111021 - 2²³ = 11112192722413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112201111061) 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, 1852033518501 + ... + 1852033518506.

It is an arithmetic number, because the mean of its divisors is an integer number (3704067037008).

Almost surely, 2^{11112201111021} is an apocalyptic number.

It is an amenable number.

11112201111021 is a deficient number, since it is larger than the sum of its proper divisors (3704067037011).

11112201111021 is an equidigital number, since it uses as much as digits as its factorization.

11112201111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704067037010.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11112201111021 its reverse (12011110221111), we get a palindrome (23123311332132).

The spelling of 11112201111021 in words is "eleven trillion, one hundred twelve billion, two hundred one million, one hundred eleven thousand, twenty-one".