121200001110211 has 4 divisors (see below), whose sum is σ = 121327984216872. Its totient is φ = 121072018003552.

The previous prime is 121200001110191. The next prime is 121200001110229. The reversal of 121200001110211 is 112011100002121.

It is a happy number.

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 121200001110211 - 2⁵ = 121200001110179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121200001110191 and 121200001110200.

It is not an unprimeable number, because it can be changed into a prime (121200001110241) 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, 63991551910 + ... + 63991553803.

It is an arithmetic number, because the mean of its divisors is an integer number (30331996054218).

Almost surely, 2^{121200001110211} is an apocalyptic number.

121200001110211 is a deficient number, since it is larger than the sum of its proper divisors (127983106661).

121200001110211 is an equidigital number, since it uses as much as digits as its factorization.

121200001110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127983106660.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121200001110211 its reverse (112011100002121), we get a palindrome (233211101112332).

The spelling of 121200001110211 in words is "one hundred twenty-one trillion, two hundred billion, one million, one hundred ten thousand, two hundred eleven".