1222247409 has 8 divisors (see below), whose sum is σ = 1715435040. Its totient is φ = 771945696.

The previous prime is 1222247399. The next prime is 1222247431. The reversal of 1222247409 is 9047422221.

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

It is not a de Polignac number, because 1222247409 - 2⁸ = 1222247153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222247409.

It is not an unprimeable number, because it can be changed into a prime (1222247489) 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, 10721412 + ... + 10721525.

It is an arithmetic number, because the mean of its divisors is an integer number (214429380).

Almost surely, 2^1222247409 is an apocalyptic number.

1222247409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1222247409 is a deficient number, since it is larger than the sum of its proper divisors (493187631).

1222247409 is a wasteful number, since it uses less digits than its factorization.

1222247409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21442959.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1222247409 is about 34960.6551569046. The cubic root of 1222247409 is about 1069.1854542622.

The spelling of 1222247409 in words is "one billion, two hundred twenty-two million, two hundred forty-seven thousand, four hundred nine".