82227722772229 has 4 divisors (see below), whose sum is σ = 82227912405280. Its totient is φ = 82227533139180.

The previous prime is 82227722772179. The next prime is 82227722772233. The reversal of 82227722772229 is 92227722772228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82227722772229 - 2²³ = 82227714383621 is a prime.

It is a super-2 number, since 2×82227722772229² (a number of 29 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 (82227722772259) 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, 94164609 + ... + 95033830.

It is an arithmetic number, because the mean of its divisors is an integer number (20556978101320).

Almost surely, 2^{82227722772229} is an apocalyptic number.

It is an amenable number.

82227722772229 is a deficient number, since it is larger than the sum of its proper divisors (189633051).

82227722772229 is a wasteful number, since it uses less digits than its factorization.

82227722772229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189633050.

The product of its digits is 44255232, while the sum is 61.

Subtracting 82227722772229 from its reverse (92227722772228), we obtain a palindrome (9999999999999).

The spelling of 82227722772229 in words is "eighty-two trillion, two hundred twenty-seven billion, seven hundred twenty-two million, seven hundred seventy-two thousand, two hundred twenty-nine".