111200112100121 has 16 divisors (see below), whose sum is σ = 128661651505728. Its totient is φ = 94984034841600.

The previous prime is 111200112100109. The next prime is 111200112100127. The reversal of 111200112100121 is 121001211002111.

It is a cyclic number.

It is not a de Polignac number, because 111200112100121 - 2¹⁸ = 111200111837977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111200112100096 and 111200112100105.

It is not an unprimeable number, because it can be changed into a prime (111200112100127) 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, 501282875 + ... + 501504656.

It is an arithmetic number, because the mean of its divisors is an integer number (8041353219108).

Almost surely, 2^{111200112100121} is an apocalyptic number.

111200112100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111200112100121 is a deficient number, since it is larger than the sum of its proper divisors (17461539405607).

111200112100121 is a wasteful number, since it uses less digits than its factorization.

111200112100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002788152.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111200112100121 its reverse (121001211002111), we get a palindrome (232201323102232).

The spelling of 111200112100121 in words is "one hundred eleven trillion, two hundred billion, one hundred twelve million, one hundred thousand, one hundred twenty-one".