1200100001201 has 4 divisors (see below), whose sum is σ = 1200104703732. Its totient is φ = 1200095298672.

The previous prime is 1200100001159. The next prime is 1200100001231. The reversal of 1200100001201 is 1021000010021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 283743720976 + 916356280225 = 532676^2 + 957265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200100001201 - 2¹⁸ = 1200099739057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200100001231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945070 + ... + 2486663.

It is an arithmetic number, because the mean of its divisors is an integer number (300026175933).

Almost surely, 2^{1200100001201} is an apocalyptic number.

It is an amenable number.

1200100001201 is a deficient number, since it is larger than the sum of its proper divisors (4702531).

1200100001201 is an equidigital number, since it uses as much as digits as its factorization.

1200100001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702530.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1200100001201 its reverse (1021000010021), we get a palindrome (2221100011222).

The spelling of 1200100001201 in words is "one trillion, two hundred billion, one hundred million, one thousand, two hundred one".