1312222133320 has 128 divisors (see below), whose sum is σ = 3512876947200. Its totient is φ = 431623535616.

The previous prime is 1312222133309. The next prime is 1312222133389. The reversal of 1312222133320 is 233312222131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 760179 + ... + 1789501.

It is an arithmetic number, because the mean of its divisors is an integer number (27444351150).

Almost surely, 2^{1312222133320} is an apocalyptic number.

1312222133320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312222133320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1756438473600).

1312222133320 is an abundant number, since it is smaller than the sum of its proper divisors (2200654813880).

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

1312222133320 is a wasteful number, since it uses less digits than its factorization.

1312222133320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029527 (or 1029523 counting only the distinct ones).

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

Adding to 1312222133320 its reverse (233312222131), we get a palindrome (1545534355451).

The spelling of 1312222133320 in words is "one trillion, three hundred twelve billion, two hundred twenty-two million, one hundred thirty-three thousand, three hundred twenty".