111201202020001 has 2 divisors, whose sum is σ = 111201202020002. Its totient is φ = 111201202020000.

The previous prime is 111201202019993. The next prime is 111201202020011. The reversal of 111201202020001 is 100020202102111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82094907269376 + 29106294750625 = 9060624^2 + 5395025^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201202020001 - 2³ = 111201202019993 is a prime.

It is not a weakly prime, because it can be changed into another prime (111201202020011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600601010000 + 55600601010001.

It is an arithmetic number, because the mean of its divisors is an integer number (55600601010001).

Almost surely, 2^{111201202020001} is an apocalyptic number.

It is an amenable number.

111201202020001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111201202020001 is an equidigital number, since it uses as much as digits as its factorization.

111201202020001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111201202020001 its reverse (100020202102111), we get a palindrome (211221404122112).

It can be divided in two parts, 111201 and 202020001, that added together give a palindrome (202131202).

The spelling of 111201202020001 in words is "one hundred eleven trillion, two hundred one billion, two hundred two million, twenty thousand, one".