11122112122211 has 16 divisors (see below), whose sum is σ = 11453555076096. Its totient is φ = 10793661480000.

The previous prime is 11122112122171. The next prime is 11122112122217. The reversal of 11122112122211 is 11222121122111.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122112122211 is a prime.

It is a super-3 number, since 3×11122112122211³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11122112122217) 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, 6217856 + ... + 7804226.

It is an arithmetic number, because the mean of its divisors is an integer number (715847192256).

Almost surely, 2^{11122112122211} is an apocalyptic number.

11122112122211 is a deficient number, since it is larger than the sum of its proper divisors (331442953885).

11122112122211 is a wasteful number, since it uses less digits than its factorization.

11122112122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587314.

The product of its digits is 64, while the sum is 20.

Adding to 11122112122211 its reverse (11222121122111), we get a palindrome (22344233244322).

The spelling of 11122112122211 in words is "eleven trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twenty-two thousand, two hundred eleven".