22215210709 has 2 divisors, whose sum is σ = 22215210710. Its totient is φ = 22215210708.

The previous prime is 22215210697. The next prime is 22215210733. The reversal of 22215210709 is 90701251222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22215008209 + 202500 = 149047^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 22215210709 - 2⁹ = 22215210197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22215210739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11107605354 + 11107605355.

It is an arithmetic number, because the mean of its divisors is an integer number (11107605355).

Almost surely, 2^22215210709 is an apocalyptic number.

It is an amenable number.

22215210709 is a deficient number, since it is larger than the sum of its proper divisors (1).

22215210709 is an equidigital number, since it uses as much as digits as its factorization.

22215210709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 22215210709 in words is "twenty-two billion, two hundred fifteen million, two hundred ten thousand, seven hundred nine".