222351869 has 2 divisors, whose sum is σ = 222351870. Its totient is φ = 222351868.

The previous prime is 222351863. The next prime is 222351911. The reversal of 222351869 is 968153222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150356644 + 71995225 = 12262^2 + 8485^2 .

It is a cyclic number.

It is not a de Polignac number, because 222351869 - 2⁴ = 222351853 is a prime.

It is a super-3 number, since 3×222351869³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222351863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111175934 + 111175935.

It is an arithmetic number, because the mean of its divisors is an integer number (111175935).

Almost surely, 2^222351869 is an apocalyptic number.

It is an amenable number.

222351869 is a deficient number, since it is larger than the sum of its proper divisors (1).

222351869 is an equidigital number, since it uses as much as digits as its factorization.

222351869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 222351869 is about 14911.4677010682. The cubic root of 222351869 is about 605.8246332926.

The spelling of 222351869 in words is "two hundred twenty-two million, three hundred fifty-one thousand, eight hundred sixty-nine".