222605442649 has 2 divisors, whose sum is σ = 222605442650. Its totient is φ = 222605442648.

The previous prime is 222605442629. The next prime is 222605442737. The reversal of 222605442649 is 946244506222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211434432400 + 11171010249 = 459820^2 + 105693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222605442649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222605442599 and 222605442608.

It is not a weakly prime, because it can be changed into another prime (222605442629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111302721324 + 111302721325.

It is an arithmetic number, because the mean of its divisors is an integer number (111302721325).

Almost surely, 2^222605442649 is an apocalyptic number.

It is an amenable number.

222605442649 is a deficient number, since it is larger than the sum of its proper divisors (1).

222605442649 is an equidigital number, since it uses as much as digits as its factorization.

222605442649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 222605442649 in words is "two hundred twenty-two billion, six hundred five million, four hundred forty-two thousand, six hundred forty-nine".