120001011001 has 2 divisors, whose sum is σ = 120001011002. Its totient is φ = 120001011000.

The previous prime is 120001010963. The next prime is 120001011059. The reversal of 120001011001 is 100110100021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109363151401 + 10637859600 = 330701^2 + 103140^2 .

It is a cyclic number.

It is not a de Polignac number, because 120001011001 - 2¹⁹ = 120000486713 is a prime.

It is not a weakly prime, because it can be changed into another prime (120001011401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60000505500 + 60000505501.

It is an arithmetic number, because the mean of its divisors is an integer number (60000505501).

Almost surely, 2^120001011001 is an apocalyptic number.

It is an amenable number.

120001011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

120001011001 is an equidigital number, since it uses as much as digits as its factorization.

120001011001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 120001011001 its reverse (100110100021), we get a palindrome (220111111022).

The spelling of 120001011001 in words is "one hundred twenty billion, one million, eleven thousand, one".