22219995823 has 4 divisors (see below), whose sum is σ = 22236251760. Its totient is φ = 22203739888.

The previous prime is 22219995817. The next prime is 22219995839. The reversal of 22219995823 is 32859991222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32859991222 = 2 ⋅16429995611.

It is a cyclic number.

It is not a de Polignac number, because 22219995823 - 2²¹ = 22217898671 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 (22219995893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8125918 + ... + 8128651.

It is an arithmetic number, because the mean of its divisors is an integer number (5559062940).

Almost surely, 2^22219995823 is an apocalyptic number.

22219995823 is a deficient number, since it is larger than the sum of its proper divisors (16255937).

22219995823 is a wasteful number, since it uses less digits than its factorization.

22219995823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16255936.

The product of its digits is 1399680, while the sum is 52.

The spelling of 22219995823 in words is "twenty-two billion, two hundred nineteen million, nine hundred ninety-five thousand, eight hundred twenty-three".