11211021122011 has 8 divisors (see below), whose sum is σ = 11719016514720. Its totient is φ = 10704739036992.

The previous prime is 11211021122009. The next prime is 11211021122017. The reversal of 11211021122011 is 11022112011211.

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 11211021122011 - 2¹ = 11211021122009 is a prime.

It is a super-4 number, since 4×11211021122011⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211021122017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428313540 + ... + 428339713.

It is an arithmetic number, because the mean of its divisors is an integer number (1464877064340).

Almost surely, 2^{11211021122011} is an apocalyptic number.

11211021122011 is a deficient number, since it is larger than the sum of its proper divisors (507995392709).

11211021122011 is an equidigital number, since it uses as much as digits as its factorization.

11211021122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856653845.

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

Adding to 11211021122011 its reverse (11022112011211), we get a palindrome (22233133133222).

The spelling of 11211021122011 in words is "eleven trillion, two hundred eleven billion, twenty-one million, one hundred twenty-two thousand, eleven".