1222163235785 has 16 divisors (see below), whose sum is σ = 1531763006400. Its totient is φ = 935181608256.

The previous prime is 1222163235781. The next prime is 1222163235857. The reversal of 1222163235785 is 5875323612221.

It is a cyclic number.

It is not a de Polignac number, because 1222163235785 - 2² = 1222163235781 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222163235781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55974575 + ... + 55996404.

It is an arithmetic number, because the mean of its divisors is an integer number (95735187900).

Almost surely, 2^{1222163235785} is an apocalyptic number.

It is an amenable number.

1222163235785 is a deficient number, since it is larger than the sum of its proper divisors (309599770615).

1222163235785 is a wasteful number, since it uses less digits than its factorization.

1222163235785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111971080.

The product of its digits is 1209600, while the sum is 47.

The spelling of 1222163235785 in words is "one trillion, two hundred twenty-two billion, one hundred sixty-three million, two hundred thirty-five thousand, seven hundred eighty-five".