120211211221211 has 16 divisors (see below), whose sum is σ = 132562556467200. Its totient is φ = 108103434405600.

The previous prime is 120211211221207. The next prime is 120211211221243. The reversal of 120211211221211 is 112122112112021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 120211211221211 - 2² = 120211211221207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120211211221261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159445676 + ... + 160197833.

It is an arithmetic number, because the mean of its divisors is an integer number (8285159779200).

Almost surely, 2^{120211211221211} is an apocalyptic number.

120211211221211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120211211221211 is a deficient number, since it is larger than the sum of its proper divisors (12351345245989).

120211211221211 is a wasteful number, since it uses less digits than its factorization.

120211211221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319643890.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 120211211221211 its reverse (112122112112021), we get a palindrome (232333323333232).

The spelling of 120211211221211 in words is "one hundred twenty trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty-one thousand, two hundred eleven".