1200010100001 has 16 divisors (see below), whose sum is σ = 1605139645440. Its totient is φ = 797447745360.

The previous prime is 1200010099999. The next prime is 1200010100077. The reversal of 1200010100001 is 1000010100021.

It is not a de Polignac number, because 1200010100001 - 2¹ = 1200010099999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1200010100501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659716 + ... + 1683818.

It is an arithmetic number, because the mean of its divisors is an integer number (100321227840).

Almost surely, 2^{1200010100001} is an apocalyptic number.

It is an amenable number.

1200010100001 is a deficient number, since it is larger than the sum of its proper divisors (405129545439).

1200010100001 is a wasteful number, since it uses less digits than its factorization.

1200010100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025356.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 1200010100001 its reverse (1000010100021), we get a palindrome (2200020200022).

The spelling of 1200010100001 in words is "one trillion, two hundred billion, ten million, one hundred thousand, one".