20343001212223 has 4 divisors (see below), whose sum is σ = 20378753411760. Its totient is φ = 20307249012688.

The previous prime is 20343001212199. The next prime is 20343001212319. The reversal of 20343001212223 is 32221210034302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20343001212223 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 (20343001282223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17876098915 + ... + 17876100052.

It is an arithmetic number, because the mean of its divisors is an integer number (5094688352940).

Almost surely, 2^{20343001212223} is an apocalyptic number.

20343001212223 is a deficient number, since it is larger than the sum of its proper divisors (35752199537).

20343001212223 is an equidigital number, since it uses as much as digits as its factorization.

20343001212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35752199536.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20343001212223 its reverse (32221210034302), we get a palindrome (52564211246525).

The spelling of 20343001212223 in words is "twenty trillion, three hundred forty-three billion, one million, two hundred twelve thousand, two hundred twenty-three".