11121112202111 has 32 divisors (see below), whose sum is σ = 11596304260800. Its totient is φ = 10652424007680.

The previous prime is 11121112202107. The next prime is 11121112202171. The reversal of 11121112202111 is 11120221112111.

It is a cyclic number.

It is not a de Polignac number, because 11121112202111 - 2² = 11121112202107 is a prime.

It is a super-2 number, since 2×11121112202111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121112202111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121112202171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2787942905 + ... + 2787946893.

It is an arithmetic number, because the mean of its divisors is an integer number (362384508150).

Almost surely, 2^{11121112202111} is an apocalyptic number.

11121112202111 is a deficient number, since it is larger than the sum of its proper divisors (475192058689).

11121112202111 is a wasteful number, since it uses less digits than its factorization.

11121112202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11121112202111 its reverse (11120221112111), we get a palindrome (22241333314222).

The spelling of 11121112202111 in words is "eleven trillion, one hundred twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred eleven".