123221343043443 has 16 divisors (see below), whose sum is σ = 171775204496640. Its totient is φ = 78421555733664.

The previous prime is 123221343043411. The next prime is 123221343043483. The reversal of 123221343043443 is 344340343122321.

It is not a de Polignac number, because 123221343043443 - 2⁵ = 123221343043411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123221343043483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1754205121 + ... + 1754275362.

It is an arithmetic number, because the mean of its divisors is an integer number (10735950281040).

Almost surely, 2^{123221343043443} is an apocalyptic number.

123221343043443 is a deficient number, since it is larger than the sum of its proper divisors (48553861453197).

123221343043443 is a wasteful number, since it uses less digits than its factorization.

123221343043443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508481018.

The product of its (nonzero) digits is 497664, while the sum is 39.

Adding to 123221343043443 its reverse (344340343122321), we get a palindrome (467561686165764).

The spelling of 123221343043443 in words is "one hundred twenty-three trillion, two hundred twenty-one billion, three hundred forty-three million, forty-three thousand, four hundred forty-three".