22278147223 has 4 divisors (see below), whose sum is σ = 22278535048. Its totient is φ = 22277759400.

The previous prime is 22278147211. The next prime is 22278147247. The reversal of 22278147223 is 32274187222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32274187222 = 2 ⋅16137093611.

It is a cyclic number.

It is not a de Polignac number, because 22278147223 - 2¹⁷ = 22278016151 is a prime.

It is a super-2 number, since 2×22278147223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22278142223) 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, 88728 + ... + 228973.

It is an arithmetic number, because the mean of its divisors is an integer number (5569633762).

Almost surely, 2^22278147223 is an apocalyptic number.

22278147223 is a deficient number, since it is larger than the sum of its proper divisors (387825).

22278147223 is an equidigital number, since it uses as much as digits as its factorization.

22278147223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387824.

The product of its digits is 150528, while the sum is 40.

The spelling of 22278147223 in words is "twenty-two billion, two hundred seventy-eight million, one hundred forty-seven thousand, two hundred twenty-three".