22145212343 has 4 divisors (see below), whose sum is σ = 22250166168. Its totient is φ = 22040258520.

The previous prime is 22145212273. The next prime is 22145212373. The reversal of 22145212343 is 34321254122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34321254122 = 2 ⋅17160627061.

It is a cyclic number.

It is not a de Polignac number, because 22145212343 - 2¹² = 22145208247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145212373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52476596 + ... + 52477017.

It is an arithmetic number, because the mean of its divisors is an integer number (5562541542).

Almost surely, 2^22145212343 is an apocalyptic number.

22145212343 is a deficient number, since it is larger than the sum of its proper divisors (104953825).

22145212343 is a wasteful number, since it uses less digits than its factorization.

22145212343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104953824.

The product of its digits is 11520, while the sum is 29.

Adding to 22145212343 its reverse (34321254122), we get a palindrome (56466466465).

The spelling of 22145212343 in words is "twenty-two billion, one hundred forty-five million, two hundred twelve thousand, three hundred forty-three".