1312221102200 has 192 divisors, whose sum is σ = 3405601402560. Its totient is φ = 467659653120.

The previous prime is 1312221102197. The next prime is 1312221102209. The reversal of 1312221102200 is 22011222131.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312221102209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7498904 + ... + 7671896.

It is an arithmetic number, because the mean of its divisors is an integer number (17737507305).

Almost surely, 2^{1312221102200} is an apocalyptic number.

1312221102200 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 1312221102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1702800701280).

1312221102200 is an abundant number, since it is smaller than the sum of its proper divisors (2093380300360).

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

1312221102200 is a wasteful number, since it uses less digits than its factorization.

1312221102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173146 (or 173137 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1312221102200 its reverse (22011222131), we get a palindrome (1334232324331).

The spelling of 1312221102200 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, one hundred two thousand, two hundred".