1213001322243 has 8 divisors (see below), whose sum is σ = 1637807692800. Its totient is φ = 798431249928.

The previous prime is 1213001322217. The next prime is 1213001322289. The reversal of 1213001322243 is 3422231003121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1213001322243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213001392243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2559074283 + ... + 2559074756.

It is an arithmetic number, because the mean of its divisors is an integer number (204725961600).

Almost surely, 2^{1213001322243} is an apocalyptic number.

1213001322243 is a deficient number, since it is larger than the sum of its proper divisors (424806370557).

1213001322243 is an equidigital number, since it uses as much as digits as its factorization.

1213001322243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118149121.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1213001322243 its reverse (3422231003121), we get a palindrome (4635232325364).

The spelling of 1213001322243 in words is "one trillion, two hundred thirteen billion, one million, three hundred twenty-two thousand, two hundred forty-three".