1222213409 has 8 divisors (see below), whose sum is σ = 1263610368. Its totient is φ = 1180939680.

The previous prime is 1222213387. The next prime is 1222213411. The reversal of 1222213409 is 9043122221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222213409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222213459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10412 + ... + 50525.

It is an arithmetic number, because the mean of its divisors is an integer number (157951296).

Almost surely, 2^1222213409 is an apocalyptic number.

It is an amenable number.

1222213409 is a deficient number, since it is larger than the sum of its proper divisors (41396959).

1222213409 is an equidigital number, since it uses as much as digits as its factorization.

1222213409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61615.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1222213409 is about 34960.1688926126. The cubic root of 1222213409 is about 1069.1755401094.

The spelling of 1222213409 in words is "one billion, two hundred twenty-two million, two hundred thirteen thousand, four hundred nine".