1000120100001 has 16 divisors (see below), whose sum is σ = 1494036907968. Its totient is φ = 589751409600.

The previous prime is 1000120099973. The next prime is 1000120100003. The reversal of 1000120100001 is 1000010210001.

It is not a de Polignac number, because 1000120100001 - 2⁵ = 1000120099969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000120100003) 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, 409548370 + ... + 409550811.

It is an arithmetic number, because the mean of its divisors is an integer number (93377306748).

Almost surely, 2^{1000120100001} is an apocalyptic number.

1000120100001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000120100001 is a deficient number, since it is larger than the sum of its proper divisors (493916807967).

1000120100001 is a wasteful number, since it uses less digits than its factorization.

1000120100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819099232.

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

Adding to 1000120100001 its reverse (1000010210001), we get a palindrome (2000130310002).

The spelling of 1000120100001 in words is "one trillion, one hundred twenty million, one hundred thousand, one".