120121221211 has 2 divisors, whose sum is σ = 120121221212. Its totient is φ = 120121221210.

The previous prime is 120121221139. The next prime is 120121221217. The reversal of 120121221211 is 112122121021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120121221211 - 2¹⁵ = 120121188443 is a prime.

It is not a weakly prime, because it can be changed into another prime (120121221217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060610605 + 60060610606.

It is an arithmetic number, because the mean of its divisors is an integer number (60060610606).

Almost surely, 2^120121221211 is an apocalyptic number.

120121221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121221211 is an equidigital number, since it uses as much as digits as its factorization.

120121221211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 120121221211 its reverse (112122121021), we get a palindrome (232243342232).

The spelling of 120121221211 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".