1321243413112 has 48 divisors (see below), whose sum is σ = 2914173450000. Its totient is φ = 559884834432.

The previous prime is 1321243413041. The next prime is 1321243413121. The reversal of 1321243413112 is 2113143421231.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18900612 + ... + 18970387.

It is an arithmetic number, because the mean of its divisors is an integer number (60711946875).

Almost surely, 2^{1321243413112} is an apocalyptic number.

It is an amenable number.

1321243413112 is an abundant number, since it is smaller than the sum of its proper divisors (1592930036888).

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

1321243413112 is a wasteful number, since it uses less digits than its factorization.

1321243413112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37871108 (or 37871097 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

Adding to 1321243413112 its reverse (2113143421231), we get a palindrome (3434386834343).

The spelling of 1321243413112 in words is "one trillion, three hundred twenty-one billion, two hundred forty-three million, four hundred thirteen thousand, one hundred twelve".