120212111 has 4 divisors (see below), whose sum is σ = 120932112. Its totient is φ = 119492112.

The previous prime is 120212089. The next prime is 120212129. The reversal of 120212111 is 111212021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120212111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120212092 and 120212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359750 + ... + 360083.

It is an arithmetic number, because the mean of its divisors is an integer number (30233028).

Almost surely, 2^120212111 is an apocalyptic number.

120212111 is a deficient number, since it is larger than the sum of its proper divisors (720001).

120212111 is an equidigital number, since it uses as much as digits as its factorization.

120212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720000.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 120212111 is about 10964.1283739292. The cubic root of 120212111 is about 493.5328608640.

Adding to 120212111 its reverse (111212021), we get a palindrome (231424132).

The spelling of 120212111 in words is "one hundred twenty million, two hundred twelve thousand, one hundred eleven".