222830891 has 2 divisors, whose sum is σ = 222830892. Its totient is φ = 222830890.

The previous prime is 222830887. The next prime is 222830899. The reversal of 222830891 is 198038222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222830891 - 2² = 222830887 is a prime.

It is a Chen prime.

It is equal to p_12269870 and since 222830891 and 12269870 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (222830899) 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 as a sum of consecutive naturals, namely, 111415445 + 111415446.

It is an arithmetic number, because the mean of its divisors is an integer number (111415446).

Almost surely, 2^222830891 is an apocalyptic number.

222830891 is a deficient number, since it is larger than the sum of its proper divisors (1).

222830891 is an equidigital number, since it uses as much as digits as its factorization.

222830891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 222830891 is about 14927.5212610802. The cubic root of 222830891 is about 606.2593724275.

The spelling of 222830891 in words is "two hundred twenty-two million, eight hundred thirty thousand, eight hundred ninety-one".