2221123007 has 2 divisors, whose sum is σ = 2221123008. Its totient is φ = 2221123006.

The previous prime is 2221123001. The next prime is 2221123019. The reversal of 2221123007 is 7003211222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221123007 - 2¹⁶ = 2221057471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221123007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221123001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110561503 + 1110561504.

It is an arithmetic number, because the mean of its divisors is an integer number (1110561504).

Almost surely, 2^2221123007 is an apocalyptic number.

2221123007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221123007 is an equidigital number, since it uses as much as digits as its factorization.

2221123007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 2221123007 is about 47128.7916989180. The cubic root of 2221123007 is about 1304.7406807979.

Adding to 2221123007 its reverse (7003211222), we get a palindrome (9224334229).

The spelling of 2221123007 in words is "two billion, two hundred twenty-one million, one hundred twenty-three thousand, seven".