111001100121121 has 32 divisors (see below), whose sum is σ = 134937061788672. Its totient is φ = 89136496189440.

The previous prime is 111001100121091. The next prime is 111001100121167. The reversal of 111001100121121 is 121121001100111.

It is not a de Polignac number, because 111001100121121 - 2⁷ = 111001100120993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111001100121221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64742685 + ... + 66435061.

It is an arithmetic number, because the mean of its divisors is an integer number (4216783180896).

Almost surely, 2^{111001100121121} is an apocalyptic number.

It is an amenable number.

111001100121121 is a deficient number, since it is larger than the sum of its proper divisors (23935961667551).

111001100121121 is a wasteful number, since it uses less digits than its factorization.

111001100121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694929.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111001100121121 its reverse (121121001100111), we get a palindrome (232122101221232).

The spelling of 111001100121121 in words is "one hundred eleven trillion, one billion, one hundred million, one hundred twenty-one thousand, one hundred twenty-one".