202200121181 has 2 divisors, whose sum is σ = 202200121182. Its totient is φ = 202200121180.

The previous prime is 202200121171. The next prime is 202200121247. The reversal of 202200121181 is 181121002202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123084495556 + 79115625625 = 350834^2 + 281275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202200121181 is a prime.

It is a super-2 number, since 2×202200121181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202200121171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101100060590 + 101100060591.

It is an arithmetic number, because the mean of its divisors is an integer number (101100060591).

Almost surely, 2^202200121181 is an apocalyptic number.

It is an amenable number.

202200121181 is a deficient number, since it is larger than the sum of its proper divisors (1).

202200121181 is an equidigital number, since it uses as much as digits as its factorization.

202200121181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 202200121181 its reverse (181121002202), we get a palindrome (383321123383).

The spelling of 202200121181 in words is "two hundred two billion, two hundred million, one hundred twenty-one thousand, one hundred eighty-one".