22212456775 has 6 divisors (see below), whose sum is σ = 27543446432. Its totient is φ = 17769965400.

The previous prime is 22212456769. The next prime is 22212456779. The reversal of 22212456775 is 57765421222.

It is not a de Polignac number, because 22212456775 - 2³ = 22212456767 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 (22212456779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 444249111 + ... + 444249160.

Almost surely, 2^22212456775 is an apocalyptic number.

22212456775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22212456775 is a deficient number, since it is larger than the sum of its proper divisors (5330989657).

22212456775 is an equidigital number, since it uses as much as digits as its factorization.

22212456775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888498281 (or 888498276 counting only the distinct ones).

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

Adding to 22212456775 its reverse (57765421222), we get a palindrome (79977877997).

The spelling of 22212456775 in words is "twenty-two billion, two hundred twelve million, four hundred fifty-six thousand, seven hundred seventy-five".