121111202020201 has 8 divisors (see below), whose sum is σ = 121410192419784. Its totient is φ = 120812265248640.

The previous prime is 121111202020189. The next prime is 121111202020223. The reversal of 121111202020201 is 102020202111121.

It can be written as a sum of positive squares in 4 ways, for example, as 2969845608976 + 118141356411225 = 1723324^2 + 10869285^2 .

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 121111202020201 - 2²⁵ = 121111168465769 is a prime.

It is a super-2 number, since 2×121111202020201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111202020271) 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, 8882836 + ... + 17920021.

It is an arithmetic number, because the mean of its divisors is an integer number (15176274052473).

Almost surely, 2^{121111202020201} is an apocalyptic number.

It is an amenable number.

121111202020201 is a deficient number, since it is larger than the sum of its proper divisors (298990399583).

121111202020201 is a wasteful number, since it uses less digits than its factorization.

121111202020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26814011.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121111202020201 its reverse (102020202111121), we get a palindrome (223131404131322).

The spelling of 121111202020201 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred two million, twenty thousand, two hundred one".