121011100112111 has 8 divisors (see below), whose sum is σ = 132390367410000. Its totient is φ = 109694875847040.

The previous prime is 121011100112107. The next prime is 121011100112153. The reversal of 121011100112111 is 111211001110121.

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

It is not a de Polignac number, because 121011100112111 - 2² = 121011100112107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011100117111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15760754186 + ... + 15760761863.

It is an arithmetic number, because the mean of its divisors is an integer number (16548795926250).

Almost surely, 2^{121011100112111} is an apocalyptic number.

121011100112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121011100112111 is a deficient number, since it is larger than the sum of its proper divisors (11379267297889).

121011100112111 is a wasteful number, since it uses less digits than its factorization.

121011100112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31521516409.

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

Adding to 121011100112111 its reverse (111211001110121), we get a palindrome (232222101222232).

The spelling of 121011100112111 in words is "one hundred twenty-one trillion, eleven billion, one hundred million, one hundred twelve thousand, one hundred eleven".