1200020111201 has 4 divisors (see below), whose sum is σ = 1204999448004. Its totient is φ = 1195040774400.

The previous prime is 1200020111167. The next prime is 1200020111203. The reversal of 1200020111201 is 1021110200021.

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 1031900430625 + 168119680576 = 1015825^2 + 410024^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200020111201 - 2¹⁴ = 1200020094817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200020111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2489668040 + ... + 2489668521.

It is an arithmetic number, because the mean of its divisors is an integer number (301249862001).

Almost surely, 2^{1200020111201} is an apocalyptic number.

It is an amenable number.

1200020111201 is a deficient number, since it is larger than the sum of its proper divisors (4979336803).

1200020111201 is an equidigital number, since it uses as much as digits as its factorization.

1200020111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979336802.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200020111201 its reverse (1021110200021), we get a palindrome (2221130311222).

The spelling of 1200020111201 in words is "one trillion, two hundred billion, twenty million, one hundred eleven thousand, two hundred one".