121220102110121 has 8 divisors (see below), whose sum is σ = 138752714084544. Its totient is φ = 103741353768240.

The previous prime is 121220102110061. The next prime is 121220102110147. The reversal of 121220102110121 is 121011201022121.

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

It is a cyclic number.

It is not a de Polignac number, because 121220102110121 - 2²⁶ = 121220035001257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121220102110121.

It is not an unprimeable number, because it can be changed into a prime (121220102110721) 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, 13465903310 + ... + 13465912311.

It is an arithmetic number, because the mean of its divisors is an integer number (17344089260568).

Almost surely, 2^{121220102110121} is an apocalyptic number.

It is an amenable number.

121220102110121 is a deficient number, since it is larger than the sum of its proper divisors (17532611974423).

121220102110121 is an equidigital number, since it uses as much as digits as its factorization.

121220102110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26931816271.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121220102110121 its reverse (121011201022121), we get a palindrome (242231303132242).

The spelling of 121220102110121 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred two million, one hundred ten thousand, one hundred twenty-one".