1222222469 has 4 divisors (see below), whose sum is σ = 1316239596. Its totient is φ = 1128205344.

The previous prime is 1222222459. The next prime is 1222222489. The reversal of 1222222469 is 9642222221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9642222221 = 569 ⋅16945909.

It can be written as a sum of positive squares in 2 ways, for example, as 382671844 + 839550625 = 19562^2 + 28975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222222469 - 2²⁰ = 1221173893 is a prime.

It is a super-2 number, since 2×1222222469² = 2987655527456911922, 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 (1222222459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47008544 + ... + 47008569.

It is an arithmetic number, because the mean of its divisors is an integer number (329059899).

Almost surely, 2^1222222469 is an apocalyptic number.

It is an amenable number.

1222222469 is a deficient number, since it is larger than the sum of its proper divisors (94017127).

1222222469 is an equidigital number, since it uses as much as digits as its factorization.

1222222469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94017126.

The product of its digits is 13824, while the sum is 32.

The square root of 1222222469 is about 34960.2984684056. The cubic root of 1222222469 is about 1069.1781819575.

The spelling of 1222222469 in words is "one billion, two hundred twenty-two million, two hundred twenty-two thousand, four hundred sixty-nine".