223222261 has 2 divisors, whose sum is σ = 223222262. Its totient is φ = 223222260.

The previous prime is 223222229. The next prime is 223222277. The reversal of 223222261 is 162222322.

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., 175695025 + 47527236 = 13255^2 + 6894^2 .

It is a cyclic number.

It is not a de Polignac number, because 223222261 - 2⁵ = 223222229 is a prime.

It is a super-3 number, since 3×223222261³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223222211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111611130 + 111611131.

It is an arithmetic number, because the mean of its divisors is an integer number (111611131).

Almost surely, 2^223222261 is an apocalyptic number.

It is an amenable number.

223222261 is a deficient number, since it is larger than the sum of its proper divisors (1).

223222261 is an equidigital number, since it uses as much as digits as its factorization.

223222261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 223222261 is about 14940.6245184062. The cubic root of 223222261 is about 606.6141002569.

Adding to 223222261 its reverse (162222322), we get a palindrome (385444583).

The spelling of 223222261 in words is "two hundred twenty-three million, two hundred twenty-two thousand, two hundred sixty-one".