1222456669 has 4 divisors (see below), whose sum is σ = 1397093344. Its totient is φ = 1047819996.

The previous prime is 1222456667. The next prime is 1222456673. The reversal of 1222456669 is 9666542221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9666542221 = 7 ⋅1380934603.

It is a cyclic number.

It is not a de Polignac number, because 1222456669 - 2¹ = 1222456667 is a prime.

It is a super-2 number, since 2×1222456669² = 2988800615165151122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222456667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87318327 + ... + 87318340.

It is an arithmetic number, because the mean of its divisors is an integer number (349273336).

Almost surely, 2^1222456669 is an apocalyptic number.

It is an amenable number.

1222456669 is a deficient number, since it is larger than the sum of its proper divisors (174636675).

1222456669 is an equidigital number, since it uses as much as digits as its factorization.

1222456669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174636674.

The product of its digits is 311040, while the sum is 43.

The square root of 1222456669 is about 34963.6478217019. The cubic root of 1222456669 is about 1069.2464689087.

The spelling of 1222456669 in words is "one billion, two hundred twenty-two million, four hundred fifty-six thousand, six hundred sixty-nine".