120011111221 has 8 divisors (see below), whose sum is σ = 121914214400. Its totient is φ = 118122591600.

The previous prime is 120011111203. The next prime is 120011111267. The reversal of 120011111221 is 122111110021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120011111221 - 2⁵ = 120011111189 is a prime.

It is a super-2 number, since 2×120011111221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011111201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3629301 + ... + 3662218.

It is an arithmetic number, because the mean of its divisors is an integer number (15239276800).

Almost surely, 2^120011111221 is an apocalyptic number.

It is an amenable number.

120011111221 is a deficient number, since it is larger than the sum of its proper divisors (1903103179).

120011111221 is a wasteful number, since it uses less digits than its factorization.

120011111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291779.

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

Adding to 120011111221 its reverse (122111110021), we get a palindrome (242122221242).

The spelling of 120011111221 in words is "one hundred twenty billion, eleven million, one hundred eleven thousand, two hundred twenty-one".