120211222121 has 8 divisors (see below), whose sum is σ = 121599572040. Its totient is φ = 118823709312.

The previous prime is 120211222111. The next prime is 120211222123. The reversal of 120211222121 is 121222112021.

It can be written as a sum of positive squares in 4 ways, for example, as 75150546496 + 45060675625 = 274136^2 + 212275^2 .

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 120211222121 - 2²² = 120207027817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120211222121.

It is not an unprimeable number, because it can be changed into a prime (120211222123) 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 7 ways as a sum of consecutive naturals, for example, 81911 + ... + 497123.

It is an arithmetic number, because the mean of its divisors is an integer number (15199946505).

Almost surely, 2^120211222121 is an apocalyptic number.

It is an amenable number.

120211222121 is a deficient number, since it is larger than the sum of its proper divisors (1388349919).

120211222121 is an equidigital number, since it uses as much as digits as its factorization.

120211222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418555.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120211222121 its reverse (121222112021), we get a palindrome (241433334142).

The spelling of 120211222121 in words is "one hundred twenty billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".