221222222233 has 2 divisors, whose sum is σ = 221222222234. Its totient is φ = 221222222232.

The previous prime is 221222222209. The next prime is 221222222251. The reversal of 221222222233 is 332222222122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220343870464 + 878351769 = 469408^2 + 29637^2 .

It is a cyclic number.

It is not a de Polignac number, because 221222222233 - 2¹³ = 221222214041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221222222198 and 221222222207.

It is not a weakly prime, because it can be changed into another prime (221222222203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611111116 + 110611111117.

It is an arithmetic number, because the mean of its divisors is an integer number (110611111117).

Almost surely, 2^221222222233 is an apocalyptic number.

It is an amenable number.

221222222233 is a deficient number, since it is larger than the sum of its proper divisors (1).

221222222233 is an equidigital number, since it uses as much as digits as its factorization.

221222222233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 25.

Adding to 221222222233 its reverse (332222222122), we get a palindrome (553444444355).

The spelling of 221222222233 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred thirty-three".