7221233721423 has 4 divisors (see below), whose sum is σ = 9628311628568. Its totient is φ = 4814155814280.

The previous prime is 7221233721389. The next prime is 7221233721431. The reversal of 7221233721423 is 3241273321227.

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

It is not a de Polignac number, because 7221233721423 - 2¹⁴ = 7221233705039 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 (7221233721223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203538953568 + ... + 1203538953573.

It is an arithmetic number, because the mean of its divisors is an integer number (2407077907142).

Almost surely, 2^{7221233721423} is an apocalyptic number.

7221233721423 is a deficient number, since it is larger than the sum of its proper divisors (2407077907145).

7221233721423 is a wasteful number, since it uses less digits than its factorization.

7221233721423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407077907144.

The product of its digits is 169344, while the sum is 39.

The spelling of 7221233721423 in words is "seven trillion, two hundred twenty-one billion, two hundred thirty-three million, seven hundred twenty-one thousand, four hundred twenty-three".