11121201021011 has 4 divisors (see below), whose sum is σ = 11121405347832. Its totient is φ = 11120996694192.

The previous prime is 11121201020989. The next prime is 11121201021019. The reversal of 11121201021011 is 11012010212111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121201021011 is a prime.

It is a super-2 number, since 2×11121201021011² (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 (11121201021019) 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, 102081746 + ... + 102190631.

It is an arithmetic number, because the mean of its divisors is an integer number (2780351336958).

Almost surely, 2^{11121201021011} is an apocalyptic number.

11121201021011 is a deficient number, since it is larger than the sum of its proper divisors (204326821).

11121201021011 is an equidigital number, since it uses as much as digits as its factorization.

11121201021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204326820.

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

Adding to 11121201021011 its reverse (11012010212111), we get a palindrome (22133211233122).

The spelling of 11121201021011 in words is "eleven trillion, one hundred twenty-one billion, two hundred one million, twenty-one thousand, eleven".