22185506699 has 2 divisors, whose sum is σ = 22185506700. Its totient is φ = 22185506698.

The previous prime is 22185506647. The next prime is 22185506713. The reversal of 22185506699 is 99660558122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22185506699 - 2²⁰ = 22184458123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22185506699.

It is not a weakly prime, because it can be changed into another prime (22185506639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11092753349 + 11092753350.

It is an arithmetic number, because the mean of its divisors is an integer number (11092753350).

Almost surely, 2^22185506699 is an apocalyptic number.

22185506699 is a deficient number, since it is larger than the sum of its proper divisors (1).

22185506699 is an equidigital number, since it uses as much as digits as its factorization.

22185506699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 22185506699 in words is "twenty-two billion, one hundred eighty-five million, five hundred six thousand, six hundred ninety-nine".