120221111 has 4 divisors (see below), whose sum is σ = 121572000. Its totient is φ = 118870224.

The previous prime is 120221099. The next prime is 120221117. The reversal of 120221111 is 111122021.

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

It is a cyclic number.

It is not a de Polignac number, because 120221111 - 2¹⁴ = 120204727 is a prime.

It is a super-4 number, since 4×120221111⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221092 and 120221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675311 + ... + 675488.

It is an arithmetic number, because the mean of its divisors is an integer number (30393000).

Almost surely, 2^120221111 is an apocalyptic number.

120221111 is a deficient number, since it is larger than the sum of its proper divisors (1350889).

120221111 is an equidigital number, since it uses as much as digits as its factorization.

120221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350888.

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

The square root of 120221111 is about 10964.5387955901. The cubic root of 120221111 is about 493.5451771075.

Adding to 120221111 its reverse (111122021), we get a palindrome (231343132).

The spelling of 120221111 in words is "one hundred twenty million, two hundred twenty-one thousand, one hundred eleven".