1213322213203 has 4 divisors (see below), whose sum is σ = 1255160910240. Its totient is φ = 1171483516168.

The previous prime is 1213322213197. The next prime is 1213322213219. The reversal of 1213322213203 is 3023122233121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213322213203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213322213003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20919348475 + ... + 20919348532.

It is an arithmetic number, because the mean of its divisors is an integer number (313790227560).

Almost surely, 2^{1213322213203} is an apocalyptic number.

1213322213203 is a deficient number, since it is larger than the sum of its proper divisors (41838697037).

1213322213203 is an equidigital number, since it uses as much as digits as its factorization.

1213322213203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41838697036.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1213322213203 its reverse (3023122233121), we get a palindrome (4236444446324).

The spelling of 1213322213203 in words is "one trillion, two hundred thirteen billion, three hundred twenty-two million, two hundred thirteen thousand, two hundred three".