120312211311 has 12 divisors (see below), whose sum is σ = 175736939040. Its totient is φ = 79306925280.

The previous prime is 120312211291. The next prime is 120312211321. The reversal of 120312211311 is 113112213021.

120312211311 is a `hidden beast` number, since 1 + 20 + 312 + 21 + 1 + 311 = 666.

It is not a de Polignac number, because 120312211311 - 2⁶ = 120312211247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120312211321) 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 11 ways as a sum of consecutive naturals, for example, 75100455 + ... + 75102056.

It is an arithmetic number, because the mean of its divisors is an integer number (14644744920).

Almost surely, 2^120312211311 is an apocalyptic number.

120312211311 is a deficient number, since it is larger than the sum of its proper divisors (55424727729).

120312211311 is a wasteful number, since it uses less digits than its factorization.

120312211311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150202606 (or 150202603 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 120312211311 its reverse (113112213021), we get a palindrome (233424424332).

The spelling of 120312211311 in words is "one hundred twenty billion, three hundred twelve million, two hundred eleven thousand, three hundred eleven".