11211012111011 has 16 divisors (see below), whose sum is σ = 11528674684800. Its totient is φ = 10898954352000.

The previous prime is 11211012110959. The next prime is 11211012111137. The reversal of 11211012111011 is 11011121011211.

It is a cyclic number.

It is not a de Polignac number, because 11211012111011 - 2¹⁰ = 11211012109987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211012114011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2437196 + ... + 5325593.

It is an arithmetic number, because the mean of its divisors is an integer number (720542167800).

Almost surely, 2^{11211012111011} is an apocalyptic number.

11211012111011 is a deficient number, since it is larger than the sum of its proper divisors (317662573789).

11211012111011 is a wasteful number, since it uses less digits than its factorization.

11211012111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763150.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11211012111011 its reverse (11011121011211), we get a palindrome (22222133122222).

The spelling of 11211012111011 in words is "eleven trillion, two hundred eleven billion, twelve million, one hundred eleven thousand, eleven".