202111073 has 2 divisors, whose sum is σ = 202111074. Its totient is φ = 202111072.

The previous prime is 202111001. The next prime is 202111081. The reversal of 202111073 is 370111202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193543744 + 8567329 = 13912^2 + 2927^2 .

It is a cyclic number.

It is not a de Polignac number, because 202111073 - 2¹² = 202106977 is a prime.

It is a super-2 number, since 2×202111073² = 81697771658422658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202111573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101055536 + 101055537.

It is an arithmetic number, because the mean of its divisors is an integer number (101055537).

Almost surely, 2^202111073 is an apocalyptic number.

It is an amenable number.

202111073 is a deficient number, since it is larger than the sum of its proper divisors (1).

202111073 is an equidigital number, since it uses as much as digits as its factorization.

202111073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 202111073 is about 14216.5774010484. The cubic root of 202111073 is about 586.8539551755.

Adding to 202111073 its reverse (370111202), we get a palindrome (572222275).

The spelling of 202111073 in words is "two hundred two million, one hundred eleven thousand, seventy-three".