11121202012111 has 16 divisors (see below), whose sum is σ = 11400933253248. Its totient is φ = 10844854020000.

The previous prime is 11121202012097. The next prime is 11121202012133. The reversal of 11121202012111 is 11121020212111.

It is a cyclic number.

It is not a de Polignac number, because 11121202012111 - 2⁵ = 11121202012079 is a prime.

It is a super-2 number, since 2×11121202012111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121202012511) 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, 39453276 + ... + 39734158.

It is an arithmetic number, because the mean of its divisors is an integer number (712558328328).

Almost surely, 2^{11121202012111} is an apocalyptic number.

11121202012111 is a deficient number, since it is larger than the sum of its proper divisors (279731241137).

11121202012111 is a wasteful number, since it uses less digits than its factorization.

11121202012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286902.

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

Adding to 11121202012111 its reverse (11121020212111), we get a palindrome (22242222224222).

The spelling of 11121202012111 in words is "eleven trillion, one hundred twenty-one billion, two hundred two million, twelve thousand, one hundred eleven".