11121021210011 has 4 divisors (see below), whose sum is σ = 11121663059232. Its totient is φ = 11120379360792.

The previous prime is 11121021210001. The next prime is 11121021210017. The reversal of 11121021210011 is 11001212012111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11121021210011 - 2²² = 11121017015707 is a prime.

It is a super-2 number, since 2×11121021210011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121021210017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320898620 + ... + 320933273.

It is an arithmetic number, because the mean of its divisors is an integer number (2780415764808).

Almost surely, 2^{11121021210011} is an apocalyptic number.

11121021210011 is a deficient number, since it is larger than the sum of its proper divisors (641849221).

11121021210011 is an equidigital number, since it uses as much as digits as its factorization.

11121021210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641849220.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11121021210011 its reverse (11001212012111), we get a palindrome (22122233222122).

The spelling of 11121021210011 in words is "eleven trillion, one hundred twenty-one billion, twenty-one million, two hundred ten thousand, eleven".