120123211 has 16 divisors (see below), whose sum is σ = 133660800. Its totient is φ = 107304384.

The previous prime is 120123197. The next prime is 120123217. The reversal of 120123211 is 112321021.

It is not a de Polignac number, because 120123211 - 2¹¹ = 120121163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 120123191 and 120123200.

It is not an unprimeable number, because it can be changed into a prime (120123217) 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, 1349655 + ... + 1349743.

It is an arithmetic number, because the mean of its divisors is an integer number (8353800).

Almost surely, 2^120123211 is an apocalyptic number.

120123211 is a deficient number, since it is larger than the sum of its proper divisors (13537589).

120123211 is an frugal number, since it uses more digits than its factorization.

120123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 120123211 is about 10960.0734942791. The cubic root of 120123211 is about 493.4111707087.

Adding to 120123211 its reverse (112321021), we get a palindrome (232444232).

The spelling of 120123211 in words is "one hundred twenty million, one hundred twenty-three thousand, two hundred eleven".