120111110131221 has 24 divisors (see below), whose sum is σ = 189272527385760. Its totient is φ = 72792098484000.

The previous prime is 120111110131217. The next prime is 120111110131261. The reversal of 120111110131221 is 122131011111021.

120111110131221 is a `hidden beast` number, since 1 + 201 + 1 + 1 + 110 + 131 + 221 = 666.

It is not a de Polignac number, because 120111110131221 - 2² = 120111110131217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120111110131194 and 120111110131203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111110131261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18064230 + ... + 23802071.

It is an arithmetic number, because the mean of its divisors is an integer number (7886355307740).

Almost surely, 2^{120111110131221} is an apocalyptic number.

120111110131221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120111110131221 is a deficient number, since it is larger than the sum of its proper divisors (69161417254539).

120111110131221 is a wasteful number, since it uses less digits than its factorization.

120111110131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41895297 (or 41895294 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 120111110131221 its reverse (122131011111021), we get a palindrome (242242121242242).

The spelling of 120111110131221 in words is "one hundred twenty trillion, one hundred eleven billion, one hundred ten million, one hundred thirty-one thousand, two hundred twenty-one".