11211020001111 has 32 divisors (see below), whose sum is σ = 18250985359360. Its totient is φ = 5978539660896.

The previous prime is 11211020001109. The next prime is 11211020001119. The reversal of 11211020001111 is 11110002011211.

It is not a de Polignac number, because 11211020001111 - 2¹ = 11211020001109 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 (11211020001119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209658301 + ... + 209711766.

It is an arithmetic number, because the mean of its divisors is an integer number (570343292480).

Almost surely, 2^{11211020001111} is an apocalyptic number.

11211020001111 is a deficient number, since it is larger than the sum of its proper divisors (7039965358249).

11211020001111 is a wasteful number, since it uses less digits than its factorization.

11211020001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419370163.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11211020001111 its reverse (11110002011211), we get a palindrome (22321022012322).

The spelling of 11211020001111 in words is "eleven trillion, two hundred eleven billion, twenty million, one thousand, one hundred eleven".