22143220061 has 2 divisors, whose sum is σ = 22143220062. Its totient is φ = 22143220060.

The previous prime is 22143219997. The next prime is 22143220063. The reversal of 22143220061 is 16002234122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20560692100 + 1582527961 = 143390^2 + 39781^2 .

It is a cyclic number.

It is not a de Polignac number, because 22143220061 - 2⁶ = 22143219997 is a prime.

It is a Sophie Germain prime.

Together with 22143220063, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22143220063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071610030 + 11071610031.

It is an arithmetic number, because the mean of its divisors is an integer number (11071610031).

Almost surely, 2^22143220061 is an apocalyptic number.

It is an amenable number.

22143220061 is a deficient number, since it is larger than the sum of its proper divisors (1).

22143220061 is an equidigital number, since it uses as much as digits as its factorization.

22143220061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 22143220061 its reverse (16002234122), we get a palindrome (38145454183).

The spelling of 22143220061 in words is "twenty-two billion, one hundred forty-three million, two hundred twenty thousand, sixty-one".