221341012423 has 4 divisors (see below), whose sum is σ = 221854565088. Its totient is φ = 220827459760.

The previous prime is 221341012391. The next prime is 221341012427. The reversal of 221341012423 is 324210143122.

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

It is a cyclic number.

It is not a de Polignac number, because 221341012423 - 2⁵ = 221341012391 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 (221341012427) 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, 256775686 + ... + 256776547.

It is an arithmetic number, because the mean of its divisors is an integer number (55463641272).

Almost surely, 2^221341012423 is an apocalyptic number.

221341012423 is a deficient number, since it is larger than the sum of its proper divisors (513552665).

221341012423 is an equidigital number, since it uses as much as digits as its factorization.

221341012423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513552664.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221341012423 its reverse (324210143122), we get a palindrome (545551155545).

The spelling of 221341012423 in words is "two hundred twenty-one billion, three hundred forty-one million, twelve thousand, four hundred twenty-three".