222843081 has 4 divisors (see below), whose sum is σ = 297124112. Its totient is φ = 148562052.

The previous prime is 222843079. The next prime is 222843091. The reversal of 222843081 is 180348222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 222843081 - 2¹ = 222843079 is a prime.

It is a super-2 number, since 2×222843081² = 99318077499145122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222843031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37140511 + ... + 37140516.

It is an arithmetic number, because the mean of its divisors is an integer number (74281028).

Almost surely, 2^222843081 is an apocalyptic number.

It is an amenable number.

222843081 is a deficient number, since it is larger than the sum of its proper divisors (74281031).

222843081 is an equidigital number, since it uses as much as digits as its factorization.

222843081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74281030.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 222843081 is about 14927.9295617309. The cubic root of 222843081 is about 606.2704273983.

The spelling of 222843081 in words is "two hundred twenty-two million, eight hundred forty-three thousand, eighty-one".