1223862105665 has 32 divisors (see below), whose sum is σ = 1549788681600. Its totient is φ = 925247024640.

The previous prime is 1223862105647. The next prime is 1223862105671. The reversal of 1223862105665 is 5665012683221.

It is not a de Polignac number, because 1223862105665 - 2³⁶ = 1155142628929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65392349 + ... + 65411061.

It is an arithmetic number, because the mean of its divisors is an integer number (48430896300).

Almost surely, 2^{1223862105665} is an apocalyptic number.

It is an amenable number.

1223862105665 is a deficient number, since it is larger than the sum of its proper divisors (325926575935).

1223862105665 is a wasteful number, since it uses less digits than its factorization.

1223862105665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20417.

The product of its (nonzero) digits is 1036800, while the sum is 47.

Adding to 1223862105665 its reverse (5665012683221), we get a palindrome (6888874788886).

The spelling of 1223862105665 in words is "one trillion, two hundred twenty-three billion, eight hundred sixty-two million, one hundred five thousand, six hundred sixty-five".