11020121191 has 8 divisors (see below), whose sum is σ = 12070721520. Its totient is φ = 10014227328.

The previous prime is 11020121137. The next prime is 11020121213. The reversal of 11020121191 is 19112102011.

11020121191 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 11020121191 - 2²³ = 11011732583 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 (11020121111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11176101 + ... + 11177086.

It is an arithmetic number, because the mean of its divisors is an integer number (1508840190).

Almost surely, 2^11020121191 is an apocalyptic number.

11020121191 is a deficient number, since it is larger than the sum of its proper divisors (1050600329).

11020121191 is a wasteful number, since it uses less digits than its factorization.

11020121191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22353233.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 11020121191 in words is "eleven billion, twenty million, one hundred twenty-one thousand, one hundred ninety-one".