1222013309 has 4 divisors (see below), whose sum is σ = 1333105440. Its totient is φ = 1110921180.

The previous prime is 1222013293. The next prime is 1222013333. The reversal of 1222013309 is 9033102221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222013309 - 2⁴ = 1222013293 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 (1222003309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55546049 + ... + 55546070.

It is an arithmetic number, because the mean of its divisors is an integer number (333276360).

Almost surely, 2^1222013309 is an apocalyptic number.

It is an amenable number.

1222013309 is a deficient number, since it is larger than the sum of its proper divisors (111092131).

1222013309 is a wasteful number, since it uses less digits than its factorization.

1222013309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111092130.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1222013309 is about 34957.3069471892. The cubic root of 1222013309 is about 1069.1171886790.

The spelling of 1222013309 in words is "one billion, two hundred twenty-two million, thirteen thousand, three hundred nine".