120002102000001 has 12 divisors (see below), whose sum is σ = 186669936444628. Its totient is φ = 73847447384544.

The previous prime is 120002101999987. The next prime is 120002102000087. The reversal of 120002102000001 is 100000201200021.

It can be written as a sum of positive squares in 2 ways, for example, as 30490540286976 + 89511561713025 = 5521824^2 + 9461055^2 .

It is not a de Polignac number, because 120002102000001 - 2⁴³ = 111206008977793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (120002102000101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512829495610 + ... + 512829495843.

Almost surely, 2^{120002102000001} is an apocalyptic number.

It is an amenable number.

120002102000001 is a deficient number, since it is larger than the sum of its proper divisors (66667834444627).

120002102000001 is a wasteful number, since it uses less digits than its factorization.

120002102000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025658991472 (or 1025658991469 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120002102000001 its reverse (100000201200021), we get a palindrome (220002303200022).

The spelling of 120002102000001 in words is "one hundred twenty trillion, two billion, one hundred two million, one", and thus it is an aban number.