120211123221 has 80 divisors (see below), whose sum is σ = 210170224000. Its totient is φ = 68444865216.

The previous prime is 120211123217. The next prime is 120211123243. The reversal of 120211123221 is 122321112021.

120211123221 is a `hidden beast` number, since 120 + 211 + 12 + 322 + 1 = 666.

It is not a de Polignac number, because 120211123221 - 2² = 120211123217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120211123194 and 120211123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211123261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7854945 + ... + 7870233.

It is an arithmetic number, because the mean of its divisors is an integer number (2627127800).

Almost surely, 2^120211123221 is an apocalyptic number.

It is an amenable number.

120211123221 is a deficient number, since it is larger than the sum of its proper divisors (89959100779).

120211123221 is an equidigital number, since it uses as much as digits as its factorization.

120211123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15605 (or 15582 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 120211123221 its reverse (122321112021), we get a palindrome (242532235242).

The spelling of 120211123221 in words is "one hundred twenty billion, two hundred eleven million, one hundred twenty-three thousand, two hundred twenty-one".