121111110110201 has 4 divisors (see below), whose sum is σ = 121205950448292. Its totient is φ = 121016269772112.

The previous prime is 121111110110183. The next prime is 121111110110209. The reversal of 121111110110201 is 102011011111121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100346319324601 + 20764790785600 = 10017301^2 + 4556840^2 .

It is a cyclic number.

It is not a de Polignac number, because 121111110110201 - 2³⁴ = 121093930241017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111110110209) 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, 47420167130 + ... + 47420169683.

It is an arithmetic number, because the mean of its divisors is an integer number (30301487612073).

Almost surely, 2^{121111110110201} is an apocalyptic number.

It is an amenable number.

121111110110201 is a deficient number, since it is larger than the sum of its proper divisors (94840338091).

121111110110201 is an equidigital number, since it uses as much as digits as its factorization.

121111110110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94840338090.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 121111110110201 its reverse (102011011111121), we get a palindrome (223122121221322).

The spelling of 121111110110201 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred ten million, one hundred ten thousand, two hundred one".