221423333210423 has 8 divisors (see below), whose sum is σ = 222470025924720. Its totient is φ = 220377265580160.

The previous prime is 221423333210411. The next prime is 221423333210479. The reversal of 221423333210423 is 324012333324122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221423333210423 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 (221423333210323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155560868 + ... + 156977801.

It is an arithmetic number, because the mean of its divisors is an integer number (27808753240590).

Almost surely, 2^{221423333210423} is an apocalyptic number.

221423333210423 is a deficient number, since it is larger than the sum of its proper divisors (1046692714297).

221423333210423 is a wasteful number, since it uses less digits than its factorization.

221423333210423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312542017.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 221423333210423 its reverse (324012333324122), we get a palindrome (545435666534545).

The spelling of 221423333210423 in words is "two hundred twenty-one trillion, four hundred twenty-three billion, three hundred thirty-three million, two hundred ten thousand, four hundred twenty-three".