15722215722223 has 4 divisors (see below), whose sum is σ = 15722898814960. Its totient is φ = 15721532629488.

The previous prime is 15722215722203. The next prime is 15722215722259. The reversal of 15722215722223 is 32222751222751.

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 15722215722223 - 2⁹ = 15722215721711 is a prime.

It is a super-2 number, since 2×15722215722223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15722215722223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15722215722203) 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, 341511843 + ... + 341557876.

It is an arithmetic number, because the mean of its divisors is an integer number (3930724703740).

Almost surely, 2^{15722215722223} is an apocalyptic number.

15722215722223 is a deficient number, since it is larger than the sum of its proper divisors (683092737).

15722215722223 is an equidigital number, since it uses as much as digits as its factorization.

15722215722223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683092736.

The product of its digits is 470400, while the sum is 43.

Adding to 15722215722223 its reverse (32222751222751), we get a palindrome (47944966944974).

The spelling of 15722215722223 in words is "fifteen trillion, seven hundred twenty-two billion, two hundred fifteen million, seven hundred twenty-two thousand, two hundred twenty-three".