1213322202311 has 4 divisors (see below), whose sum is σ = 1252461628224. Its totient is φ = 1174182776400.

The previous prime is 1213322202307. The next prime is 1213322202317. The reversal of 1213322202311 is 1132022233121.

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 1213322202311 - 2² = 1213322202307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213322202317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19569712910 + ... + 19569712971.

It is an arithmetic number, because the mean of its divisors is an integer number (313115407056).

Almost surely, 2^{1213322202311} is an apocalyptic number.

1213322202311 is a deficient number, since it is larger than the sum of its proper divisors (39139425913).

1213322202311 is an equidigital number, since it uses as much as digits as its factorization.

1213322202311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39139425912.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1213322202311 its reverse (1132022233121), we get a palindrome (2345344435432).

The spelling of 1213322202311 in words is "one trillion, two hundred thirteen billion, three hundred twenty-two million, two hundred two thousand, three hundred eleven".