1212304002355 has 4 divisors (see below), whose sum is σ = 1454764802832. Its totient is φ = 969843201880.

The previous prime is 1212304002353. The next prime is 1212304002361. The reversal of 1212304002355 is 5532004032121.

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

It is not a de Polignac number, because 1212304002355 - 2¹ = 1212304002353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212304002353) 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 3 ways as a sum of consecutive naturals, for example, 121230400231 + ... + 121230400240.

It is an arithmetic number, because the mean of its divisors is an integer number (363691200708).

Almost surely, 2^{1212304002355} is an apocalyptic number.

1212304002355 is a deficient number, since it is larger than the sum of its proper divisors (242460800477).

1212304002355 is an equidigital number, since it uses as much as digits as its factorization.

1212304002355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242460800476.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 1212304002355 its reverse (5532004032121), we get a palindrome (6744308034476).

The spelling of 1212304002355 in words is "one trillion, two hundred twelve billion, three hundred four million, two thousand, three hundred fifty-five".