202120111201 has 2 divisors, whose sum is σ = 202120111202. Its totient is φ = 202120111200.

The previous prime is 202120111139. The next prime is 202120111273. The reversal of 202120111201 is 102111021202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185946376225 + 16173734976 = 431215^2 + 127176^2 .

It is a cyclic number.

It is not a de Polignac number, because 202120111201 - 2¹¹ = 202120109153 is a prime.

It is not a weakly prime, because it can be changed into another prime (202120121201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060055600 + 101060055601.

It is an arithmetic number, because the mean of its divisors is an integer number (101060055601).

Almost surely, 2^202120111201 is an apocalyptic number.

It is an amenable number.

202120111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120111201 is an equidigital number, since it uses as much as digits as its factorization.

202120111201 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 202120111201 its reverse (102111021202), we get a palindrome (304231132403).

The spelling of 202120111201 in words is "two hundred two billion, one hundred twenty million, one hundred eleven thousand, two hundred one".