202011022221181 has 2 divisors, whose sum is σ = 202011022221182. Its totient is φ = 202011022221180.

The previous prime is 202011022221179. The next prime is 202011022221223. The reversal of 202011022221181 is 181122220110202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160877514062500 + 41133508158681 = 12683750^2 + 6413541^2 .

It is a cyclic number.

It is not a de Polignac number, because 202011022221181 - 2¹ = 202011022221179 is a prime.

It is a super-2 number, since 2×202011022221181² (a number of 29 digits) contains 22 as substring.

Together with 202011022221179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202011022221781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101005511110590 + 101005511110591.

It is an arithmetic number, because the mean of its divisors is an integer number (101005511110591).

Almost surely, 2^{202011022221181} is an apocalyptic number.

It is an amenable number.

202011022221181 is a deficient number, since it is larger than the sum of its proper divisors (1).

202011022221181 is an equidigital number, since it uses as much as digits as its factorization.

202011022221181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 25.

Adding to 202011022221181 its reverse (181122220110202), we get a palindrome (383133242331383).

The spelling of 202011022221181 in words is "two hundred two trillion, eleven billion, twenty-two million, two hundred twenty-one thousand, one hundred eighty-one".