121111200100121 has 8 divisors (see below), whose sum is σ = 150995781943104. Its totient is φ = 94372363714320.

The previous prime is 121111200100091. The next prime is 121111200100123. The reversal of 121111200100121 is 121001002111121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121111200100121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121111200100096 and 121111200100105.

It is not an unprimeable number, because it can be changed into a prime (121111200100123) 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, 786436364210 + ... + 786436364363.

It is an arithmetic number, because the mean of its divisors is an integer number (18874472742888).

Almost surely, 2^{121111200100121} is an apocalyptic number.

121111200100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121111200100121 is a deficient number, since it is larger than the sum of its proper divisors (29884581842983).

121111200100121 is a wasteful number, since it uses less digits than its factorization.

121111200100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572872728591.

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

Adding to 121111200100121 its reverse (121001002111121), we get a palindrome (242112202211242).

The spelling of 121111200100121 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred million, one hundred thousand, one hundred twenty-one".