1321442433123 has 8 divisors (see below), whose sum is σ = 1761975787200. Its totient is φ = 880935350568.

The previous prime is 1321442433119. The next prime is 1321442433149. The reversal of 1321442433123 is 3213342441231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321442433123 - 2² = 1321442433119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321442433523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6450213 + ... + 6651926.

It is an arithmetic number, because the mean of its divisors is an integer number (220246973400).

Almost surely, 2^{1321442433123} is an apocalyptic number.

1321442433123 is a deficient number, since it is larger than the sum of its proper divisors (440533354077).

1321442433123 is a wasteful number, since it uses less digits than its factorization.

1321442433123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13135761.

The product of its digits is 41472, while the sum is 33.

Adding to 1321442433123 its reverse (3213342441231), we get a palindrome (4534784874354).

The spelling of 1321442433123 in words is "one trillion, three hundred twenty-one billion, four hundred forty-two million, four hundred thirty-three thousand, one hundred twenty-three".