11110111210121 has 16 divisors (see below), whose sum is σ = 13851642055680. Its totient is φ = 8657182744080.

The previous prime is 11110111210097. The next prime is 11110111210151. The reversal of 11110111210121 is 12101211101111.

It is a cyclic number.

It is not a de Polignac number, because 11110111210121 - 2⁶ = 11110111210057 is a prime.

It is a super-2 number, since 2×11110111210121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11110111210096 and 11110111210105.

It is not an unprimeable number, because it can be changed into a prime (11110111210151) 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, 23050820 + ... + 23527866.

It is an arithmetic number, because the mean of its divisors is an integer number (865727628480).

Almost surely, 2^{11110111210121} is an apocalyptic number.

11110111210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11110111210121 is a deficient number, since it is larger than the sum of its proper divisors (2741530845559).

11110111210121 is a wasteful number, since it uses less digits than its factorization.

11110111210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779524.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11110111210121 its reverse (12101211101111), we get a palindrome (23211322311232).

The spelling of 11110111210121 in words is "eleven trillion, one hundred ten billion, one hundred eleven million, two hundred ten thousand, one hundred twenty-one".