1222344421 has 8 divisors (see below), whose sum is σ = 1306122840. Its totient is φ = 1139885568.

The previous prime is 1222344397. The next prime is 1222344427. The reversal of 1222344421 is 1244432221.

It can be written as a sum of positive squares in 4 ways, for example, as 843263521 + 379080900 = 29039^2 + 19470^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222344421 - 2²⁷ = 1088126693 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 (1222344427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327976 + ... + 331681.

It is an arithmetic number, because the mean of its divisors is an integer number (163265355).

Almost surely, 2^1222344421 is an apocalyptic number.

It is an amenable number.

1222344421 is a deficient number, since it is larger than the sum of its proper divisors (83778419).

1222344421 is a wasteful number, since it uses less digits than its factorization.

1222344421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659783.

The product of its digits is 3072, while the sum is 25.

The square root of 1222344421 is about 34962.0425747696. The cubic root of 1222344421 is about 1069.2137412452.

Adding to 1222344421 its reverse (1244432221), we get a palindrome (2466776642).

It can be divided in two parts, 12223 and 44421, that added together give a square (56644 = 238²).

The spelling of 1222344421 in words is "one billion, two hundred twenty-two million, three hundred forty-four thousand, four hundred twenty-one".