121101201121121 has 16 divisors (see below), whose sum is σ = 130591657728000. Its totient is φ = 111635824326528.

The previous prime is 121101201121097. The next prime is 121101201121127. The reversal of 121101201121121 is 121121102101121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121101201121121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121101201121121.

It is not an unprimeable number, because it can be changed into a prime (121101201121127) 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, 33448160 + ... + 36891486.

It is an arithmetic number, because the mean of its divisors is an integer number (8161978608000).

Almost surely, 2^{121101201121121} is an apocalyptic number.

It is an amenable number.

121101201121121 is a deficient number, since it is larger than the sum of its proper divisors (9490456606879).

121101201121121 is a wasteful number, since it uses less digits than its factorization.

121101201121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446968.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121101201121121 its reverse (121121102101121), we get a palindrome (242222303222242).

The spelling of 121101201121121 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred one million, one hundred twenty-one thousand, one hundred twenty-one".