120203111 has 16 divisors (see below), whose sum is σ = 141419520. Its totient is φ = 100033440.

The previous prime is 120203081. The next prime is 120203131. The reversal of 120203111 is 111302021.

It is a cyclic number.

It is not a de Polignac number, because 120203111 - 2²² = 116008807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120203092 and 120203101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120203131) 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, 41705 + ... + 44493.

It is an arithmetic number, because the mean of its divisors is an integer number (8838720).

Almost surely, 2^120203111 is an apocalyptic number.

120203111 is a deficient number, since it is larger than the sum of its proper divisors (21216409).

120203111 is a wasteful number, since it uses less digits than its factorization.

120203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 120203111 is about 10963.7179369044. The cubic root of 120203111 is about 493.5205440057.

Adding to 120203111 its reverse (111302021), we get a palindrome (231505132).

The spelling of 120203111 in words is "one hundred twenty million, two hundred three thousand, one hundred eleven".