1321112543223 has 32 divisors (see below), whose sum is σ = 2033236834560. Its totient is φ = 754603223040.

The previous prime is 1321112543221. The next prime is 1321112543269. The reversal of 1321112543223 is 3223452111231.

It is not a de Polignac number, because 1321112543223 - 2¹ = 1321112543221 is a prime.

It is a super-2 number, since 2×1321112543223² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321112543221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5337636 + ... + 5579657.

It is an arithmetic number, because the mean of its divisors is an integer number (63538651080).

Almost surely, 2^{1321112543223} is an apocalyptic number.

1321112543223 is a deficient number, since it is larger than the sum of its proper divisors (712124291337).

1321112543223 is a wasteful number, since it uses less digits than its factorization.

1321112543223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10917519.

The product of its digits is 8640, while the sum is 30.

Adding to 1321112543223 its reverse (3223452111231), we get a palindrome (4544564654454).

The spelling of 1321112543223 in words is "one trillion, three hundred twenty-one billion, one hundred twelve million, five hundred forty-three thousand, two hundred twenty-three".