120111222001 has 2 divisors, whose sum is σ = 120111222002. Its totient is φ = 120111222000.

The previous prime is 120111221999. The next prime is 120111222071. The reversal of 120111222001 is 100222111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105754389601 + 14356832400 = 325199^2 + 119820^2 .

It is an emirp because it is prime and its reverse (100222111021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120111222001 - 2¹ = 120111221999 is a prime.

Together with 120111221999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120111222071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60055611000 + 60055611001.

It is an arithmetic number, because the mean of its divisors is an integer number (60055611001).

Almost surely, 2^120111222001 is an apocalyptic number.

It is an amenable number.

120111222001 is a deficient number, since it is larger than the sum of its proper divisors (1).

120111222001 is an equidigital number, since it uses as much as digits as its factorization.

120111222001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120111222001 its reverse (100222111021), we get a palindrome (220333333022).

The spelling of 120111222001 in words is "one hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, one".