1222366669 has 4 divisors (see below), whose sum is σ = 1255403644. Its totient is φ = 1189329696.

The previous prime is 1222366643. The next prime is 1222366681. The reversal of 1222366669 is 9666632221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9666632221 = 1459 ⋅6625519.

It can be written as a sum of positive squares in 2 ways, for example, as 695113225 + 527253444 = 26365^2 + 22962^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222366669 - 2¹⁹ = 1221842381 is a prime.

It is a super-2 number, since 2×1222366669² = 2988360546964311122, 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 (1222366069) 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, 16518432 + ... + 16518505.

It is an arithmetic number, because the mean of its divisors is an integer number (313850911).

Almost surely, 2^1222366669 is an apocalyptic number.

It is an amenable number.

1222366669 is a deficient number, since it is larger than the sum of its proper divisors (33036975).

1222366669 is an equidigital number, since it uses as much as digits as its factorization.

1222366669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33036974.

The product of its digits is 279936, while the sum is 43.

The square root of 1222366669 is about 34962.3607469519. The cubic root of 1222366669 is about 1069.2202281575.

The spelling of 1222366669 in words is "one billion, two hundred twenty-two million, three hundred sixty-six thousand, six hundred sixty-nine".