121000120211 has 4 divisors (see below), whose sum is σ = 121003201800. Its totient is φ = 120997038624.

The previous prime is 121000120187. The next prime is 121000120217. The reversal of 121000120211 is 112021000121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112021000121 = 59 ⋅1898661019.

It is a cyclic number.

It is not a de Polignac number, because 121000120211 - 2²² = 120995925907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000120192 and 121000120201.

It is not an unprimeable number, because it can be changed into a prime (121000120217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1481126 + ... + 1560683.

It is an arithmetic number, because the mean of its divisors is an integer number (30250800450).

Almost surely, 2^121000120211 is an apocalyptic number.

121000120211 is a deficient number, since it is larger than the sum of its proper divisors (3081589).

121000120211 is an equidigital number, since it uses as much as digits as its factorization.

121000120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081588.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121000120211 its reverse (112021000121), we get a palindrome (233021120332).

The spelling of 121000120211 in words is "one hundred twenty-one billion, one hundred twenty thousand, two hundred eleven".