222696401 has 2 divisors, whose sum is σ = 222696402. Its totient is φ = 222696400.

The previous prime is 222696391. The next prime is 222696433. The reversal of 222696401 is 104696222.

It is an a-pointer prime, because the next prime (222696433) can be obtained adding 222696401 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176252176 + 46444225 = 13276^2 + 6815^2 .

It is a cyclic number.

It is not a de Polignac number, because 222696401 - 2¹⁸ = 222434257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_12262946 and since 222696401 and 12262946 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 (222696491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111348200 + 111348201.

It is an arithmetic number, because the mean of its divisors is an integer number (111348201).

Almost surely, 2^222696401 is an apocalyptic number.

It is an amenable number.

222696401 is a deficient number, since it is larger than the sum of its proper divisors (1).

222696401 is an equidigital number, since it uses as much as digits as its factorization.

222696401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 222696401 is about 14923.0158145061. The cubic root of 222696401 is about 606.1373782225.

The spelling of 222696401 in words is "two hundred twenty-two million, six hundred ninety-six thousand, four hundred one".