11101210122121 has 16 divisors (see below), whose sum is σ = 12951872524800. Its totient is φ = 9317446976448.

The previous prime is 11101210122043. The next prime is 11101210122251. The reversal of 11101210122121 is 12122101210111.

It is a cyclic number.

It is not a de Polignac number, because 11101210122121 - 2¹⁷ = 11101209991049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101210122095 and 11101210122104.

It is not an unprimeable number, because it can be changed into a prime (11101210123121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29204481 + ... + 29582158.

It is an arithmetic number, because the mean of its divisors is an integer number (809492032800).

Almost surely, 2^{11101210122121} is an apocalyptic number.

It is an amenable number.

11101210122121 is a deficient number, since it is larger than the sum of its proper divisors (1850662402679).

11101210122121 is an equidigital number, since it uses as much as digits as its factorization.

11101210122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58787208.

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

Adding to 11101210122121 its reverse (12122101210111), we get a palindrome (23223311332232).

The spelling of 11101210122121 in words is "eleven trillion, one hundred one billion, two hundred ten million, one hundred twenty-two thousand, one hundred twenty-one".