2123353220343 has 16 divisors (see below), whose sum is σ = 2835556164576. Its totient is φ = 1413359861760.

The previous prime is 2123353220323. The next prime is 2123353220357. The reversal of 2123353220343 is 3430223533212.

It is a happy number.

It is not a de Polignac number, because 2123353220343 - 2⁶ = 2123353220279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123353220323) 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, 34528503 + ... + 34589943.

It is an arithmetic number, because the mean of its divisors is an integer number (177222260286).

Almost surely, 2^{2123353220343} is an apocalyptic number.

2123353220343 is a deficient number, since it is larger than the sum of its proper divisors (712202944233).

2123353220343 is a wasteful number, since it uses less digits than its factorization.

2123353220343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79234.

The product of its (nonzero) digits is 77760, while the sum is 33.

Adding to 2123353220343 its reverse (3430223533212), we get a palindrome (5553576753555).

The spelling of 2123353220343 in words is "two trillion, one hundred twenty-three billion, three hundred fifty-three million, two hundred twenty thousand, three hundred forty-three".