202233220181 has 2 divisors, whose sum is σ = 202233220182. Its totient is φ = 202233220180.

The previous prime is 202233220081. The next prime is 202233220183. The reversal of 202233220181 is 181022332202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158078603281 + 44154616900 = 397591^2 + 210130^2 .

It is a cyclic number.

It is not a de Polignac number, because 202233220181 - 2²² = 202229025877 is a prime.

It is a super-2 number, since 2×202233220181² (a number of 23 digits) contains 22 as substring.

Together with 202233220183, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202233220181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202233220183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101116610090 + 101116610091.

It is an arithmetic number, because the mean of its divisors is an integer number (101116610091).

Almost surely, 2^202233220181 is an apocalyptic number.

It is an amenable number.

202233220181 is a deficient number, since it is larger than the sum of its proper divisors (1).

202233220181 is an equidigital number, since it uses as much as digits as its factorization.

202233220181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 202233220181 its reverse (181022332202), we get a palindrome (383255552383).

The spelling of 202233220181 in words is "two hundred two billion, two hundred thirty-three million, two hundred twenty thousand, one hundred eighty-one".