1000223030221 has 2 divisors, whose sum is σ = 1000223030222. Its totient is φ = 1000223030220.

The previous prime is 1000223030173. The next prime is 1000223030237. The reversal of 1000223030221 is 1220303220001.

It is an a-pointer prime, because the next prime (1000223030237) can be obtained adding 1000223030221 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 885972270121 + 114250760100 = 941261^2 + 338010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000223030221 - 2²¹ = 1000220933069 is a prime.

It is a super-2 number, since 2×1000223030221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1000223030195 and 1000223030204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000223031221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500111515110 + 500111515111.

It is an arithmetic number, because the mean of its divisors is an integer number (500111515111).

Almost surely, 2^{1000223030221} is an apocalyptic number.

It is an amenable number.

1000223030221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000223030221 is an equidigital number, since it uses as much as digits as its factorization.

1000223030221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1000223030221 its reverse (1220303220001), we get a palindrome (2220526250222).

The spelling of 1000223030221 in words is "one trillion, two hundred twenty-three million, thirty thousand, two hundred twenty-one".