1213324123122 has 20 divisors (see below), whose sum is σ = 2718744794766. Its totient is φ = 404441374320.

The previous prime is 1213324123093. The next prime is 1213324123129. The reversal of 1213324123122 is 2213214233121.

1213324123122 is a `hidden beast` number, since 1 + 2 + 1 + 332 + 4 + 12 + 312 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1144170376281 + 69153746841 = 1069659^2 + 262971^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1213324123129) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3744827379 + ... + 3744827702.

Almost surely, 2^{1213324123122} is an apocalyptic number.

1213324123122 is an abundant number, since it is smaller than the sum of its proper divisors (1505420671644).

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

1213324123122 is an equidigital number, since it uses as much as digits as its factorization.

1213324123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489655095 (or 7489655086 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 1213324123122 its reverse (2213214233121), we get a palindrome (3426538356243).

The spelling of 1213324123122 in words is "one trillion, two hundred thirteen billion, three hundred twenty-four million, one hundred twenty-three thousand, one hundred twenty-two".