11101111022121 has 16 divisors (see below), whose sum is σ = 15678657183168. Its totient is φ = 6962513907200.

The previous prime is 11101111022107. The next prime is 11101111022207. The reversal of 11101111022121 is 12122011110111.

It is not a de Polignac number, because 11101111022121 - 2⁷ = 11101111021993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11101111022121.

It is not an unprimeable number, because it can be changed into a prime (11101111022321) 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, 45017820 + ... + 45263741.

It is an arithmetic number, because the mean of its divisors is an integer number (979916073948).

Almost surely, 2^{11101111022121} is an apocalyptic number.

It is an amenable number.

11101111022121 is a deficient number, since it is larger than the sum of its proper divisors (4577546161047).

11101111022121 is a wasteful number, since it uses less digits than its factorization.

11101111022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90283992.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11101111022121 its reverse (12122011110111), we get a palindrome (23223122132232).

The spelling of 11101111022121 in words is "eleven trillion, one hundred one billion, one hundred eleven million, twenty-two thousand, one hundred twenty-one".