121000111110211 has 4 divisors (see below), whose sum is σ = 122110203872800. Its totient is φ = 119890018347624.

The previous prime is 121000111110169. The next prime is 121000111110247. The reversal of 121000111110211 is 112011111000121.

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

It is a cyclic number.

It is not a de Polignac number, because 121000111110211 - 2⁴⁵ = 85815739021379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000111110191 and 121000111110200.

It is not an unprimeable number, because it can be changed into a prime (121000111110251) 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, 555046381131 + ... + 555046381348.

It is an arithmetic number, because the mean of its divisors is an integer number (30527550968200).

Almost surely, 2^{121000111110211} is an apocalyptic number.

121000111110211 is a deficient number, since it is larger than the sum of its proper divisors (1110092762589).

121000111110211 is a wasteful number, since it uses less digits than its factorization.

121000111110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110092762588.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121000111110211 its reverse (112011111000121), we get a palindrome (233011222110332).

The spelling of 121000111110211 in words is "one hundred twenty-one trillion, one hundred eleven million, one hundred ten thousand, two hundred eleven".