11210220121111 has 16 divisors (see below), whose sum is σ = 12401783306496. Its totient is φ = 10047403800000.

The previous prime is 11210220121039. The next prime is 11210220121157. The reversal of 11210220121111 is 11112102201211.

It is a cyclic number.

It is not a de Polignac number, because 11210220121111 - 2⁹ = 11210220120599 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 (11210220121181) 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 15 ways as a sum of consecutive naturals, for example, 84188536 + ... + 84321586.

It is an arithmetic number, because the mean of its divisors is an integer number (775111456656).

Almost surely, 2^{11210220121111} is an apocalyptic number.

11210220121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11210220121111 is a deficient number, since it is larger than the sum of its proper divisors (1191563185385).

11210220121111 is a wasteful number, since it uses less digits than its factorization.

11210220121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241014.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11210220121111 its reverse (11112102201211), we get a palindrome (22322322322322).

It can be divided in two parts, 112102201211 and 11, that multiplied together give a palindrome (1233124213321).

The spelling of 11210220121111 in words is "eleven trillion, two hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, one hundred eleven".