120211201111 has 4 divisors (see below), whose sum is σ = 124088981824. Its totient is φ = 116333420400.

The previous prime is 120211201109. The next prime is 120211201199. The reversal of 120211201111 is 111102112021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111102112021 = 43 ⋅2583770047.

It is a cyclic number.

It is not a de Polignac number, because 120211201111 - 2¹ = 120211201109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120211201091 and 120211201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211201811) 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 3 ways as a sum of consecutive naturals, for example, 1938890310 + ... + 1938890371.

It is an arithmetic number, because the mean of its divisors is an integer number (31022245456).

Almost surely, 2^120211201111 is an apocalyptic number.

120211201111 is a deficient number, since it is larger than the sum of its proper divisors (3877780713).

120211201111 is an equidigital number, since it uses as much as digits as its factorization.

120211201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877780712.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 120211201111 its reverse (111102112021), we get a palindrome (231313313132).

The spelling of 120211201111 in words is "one hundred twenty billion, two hundred eleven million, two hundred one thousand, one hundred eleven".