120001222001 has 2 divisors, whose sum is σ = 120001222002. Its totient is φ = 120001222000.

The previous prime is 120001221997. The next prime is 120001222031. The reversal of 120001222001 is 100222100021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102259248400 + 17741973601 = 319780^2 + 133199^2 .

It is a cyclic number.

It is not a de Polignac number, because 120001222001 - 2² = 120001221997 is a prime.

It is not a weakly prime, because it can be changed into another prime (120001222031) 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 as a sum of consecutive naturals, namely, 60000611000 + 60000611001.

It is an arithmetic number, because the mean of its divisors is an integer number (60000611001).

Almost surely, 2^120001222001 is an apocalyptic number.

It is an amenable number.

120001222001 is a deficient number, since it is larger than the sum of its proper divisors (1).

120001222001 is an equidigital number, since it uses as much as digits as its factorization.

120001222001 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 11.

Adding to 120001222001 its reverse (100222100021), we get a palindrome (220223322022).

The spelling of 120001222001 in words is "one hundred twenty billion, one million, two hundred twenty-two thousand, one".