121020110020201 has 4 divisors (see below), whose sum is σ = 138308697165952. Its totient is φ = 103731522874452.

The previous prime is 121020110020181. The next prime is 121020110020207. The reversal of 121020110020201 is 102020011020121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121020110020201 - 2¹¹ = 121020110018153 is a prime.

It is a super-3 number, since 3×121020110020201³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121020110020207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8644293572865 + ... + 8644293572878.

It is an arithmetic number, because the mean of its divisors is an integer number (34577174291488).

Almost surely, 2^{121020110020201} is an apocalyptic number.

It is an amenable number.

121020110020201 is a deficient number, since it is larger than the sum of its proper divisors (17288587145751).

121020110020201 is an equidigital number, since it uses as much as digits as its factorization.

121020110020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17288587145750.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121020110020201 its reverse (102020011020121), we get a palindrome (223040121040322).

The spelling of 121020110020201 in words is "one hundred twenty-one trillion, twenty billion, one hundred ten million, twenty thousand, two hundred one".