1212263360663 has 4 divisors (see below), whose sum is σ = 1212290598840. Its totient is φ = 1212236122488.

The previous prime is 1212263360657. The next prime is 1212263360683. The reversal of 1212263360663 is 3660633622121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212263360663 - 2⁴ = 1212263360647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212263360663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212263360683) 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 in 3 ways as a sum of consecutive naturals, for example, 13552220 + ... + 13641377.

It is an arithmetic number, because the mean of its divisors is an integer number (303072649710).

Almost surely, 2^{1212263360663} is an apocalyptic number.

1212263360663 is a deficient number, since it is larger than the sum of its proper divisors (27238177).

1212263360663 is an equidigital number, since it uses as much as digits as its factorization.

1212263360663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27238176.

The product of its (nonzero) digits is 279936, while the sum is 41.

Adding to 1212263360663 its reverse (3660633622121), we get a palindrome (4872896982784).

The spelling of 1212263360663 in words is "one trillion, two hundred twelve billion, two hundred sixty-three million, three hundred sixty thousand, six hundred sixty-three".