1312220312322 has 16 divisors (see below), whose sum is σ = 2635704321120. Its totient is φ = 435529488032.

The previous prime is 1312220312321. The next prime is 1312220312327. The reversal of 1312220312322 is 2232130222131.

It is a junction number, because it is equal to n+sod(n) for n = 1312220312292 and 1312220312301.

It is not an unprimeable number, because it can be changed into a prime (1312220312321) 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, 469319172 + ... + 469321967.

It is an arithmetic number, because the mean of its divisors is an integer number (164731520070).

Almost surely, 2^{1312220312322} is an apocalyptic number.

1312220312322 is an abundant number, since it is smaller than the sum of its proper divisors (1323484008798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312220312322 is a wasteful number, since it uses less digits than its factorization.

1312220312322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938641377.

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

Adding to 1312220312322 its reverse (2232130222131), we get a palindrome (3544350534453).

The spelling of 1312220312322 in words is "one trillion, three hundred twelve billion, two hundred twenty million, three hundred twelve thousand, three hundred twenty-two".