11211121110121 has 8 divisors (see below), whose sum is σ = 11522381628384. Its totient is φ = 10902157717920.

The previous prime is 11211121110107. The next prime is 11211121110127. The reversal of 11211121110121 is 12101112111211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11211121110121 - 2²¹ = 11211119012969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211121110095 and 11211121110104.

It is not an unprimeable number, because it can be changed into a prime (11211121110127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574271620 + ... + 574291141.

It is an arithmetic number, because the mean of its divisors is an integer number (1440297703548).

Almost surely, 2^{11211121110121} is an apocalyptic number.

It is an amenable number.

11211121110121 is a deficient number, since it is larger than the sum of its proper divisors (311260518263).

11211121110121 is a wasteful number, since it uses less digits than its factorization.

11211121110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148563031.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11211121110121 its reverse (12101112111211), we get a palindrome (23312233221332).

The spelling of 11211121110121 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty-one".