120212112111111 has 48 divisors (see below), whose sum is σ = 179438508674880. Its totient is φ = 77492484449280.

The previous prime is 120212112111107. The next prime is 120212112111139. The reversal of 120212112111111 is 111111211212021.

120212112111111 is a `hidden beast` number, since 120 + 212 + 11 + 211 + 1 + 111 = 666.

It is not a de Polignac number, because 120212112111111 - 2² = 120212112111107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212112111101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89076766 + ... + 90416228.

It is an arithmetic number, because the mean of its divisors is an integer number (3738302264060).

Almost surely, 2^{120212112111111} is an apocalyptic number.

120212112111111 is a deficient number, since it is larger than the sum of its proper divisors (59226396563769).

120212112111111 is a wasteful number, since it uses less digits than its factorization.

120212112111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341176 (or 1341173 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 120212112111111 its reverse (111111211212021), we get a palindrome (231323323323132).

The spelling of 120212112111111 in words is "one hundred twenty trillion, two hundred twelve billion, one hundred twelve million, one hundred eleven thousand, one hundred eleven".