121101101100121 has 32 divisors (see below), whose sum is σ = 128680938321408. Its totient is φ = 113823928995840.

The previous prime is 121101101100101. The next prime is 121101101100131. The reversal of 121101101100121 is 121001101101121.

It is a cyclic number.

It is not a de Polignac number, because 121101101100121 - 2⁴¹ = 118902077844569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121101101100101) 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, 304675305 + ... + 305072521.

It is an arithmetic number, because the mean of its divisors is an integer number (4021279322544).

Almost surely, 2^{121101101100121} is an apocalyptic number.

It is an amenable number.

121101101100121 is a deficient number, since it is larger than the sum of its proper divisors (7579837221287).

121101101100121 is a wasteful number, since it uses less digits than its factorization.

121101101100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399841.

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

Adding to 121101101100121 its reverse (121001101101121), we get a palindrome (242102202201242).

The spelling of 121101101100121 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred one million, one hundred thousand, one hundred twenty-one".