1223132009 has 24 divisors (see below), whose sum is σ = 1386540960. Its totient is φ = 1077658560.

The previous prime is 1223131991. The next prime is 1223132017. The reversal of 1223132009 is 9002313221.

1223132009 = 247² + 248² + ... + 1544².

It is not a de Polignac number, because 1223132009 - 2¹⁶ = 1223066473 is a prime.

It is a super-2 number, since 2×1223132009² = 2992103822880752162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223132909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519974 + ... + 522320.

It is an arithmetic number, because the mean of its divisors is an integer number (57772540).

Almost surely, 2^1223132009 is an apocalyptic number.

It is an amenable number.

1223132009 is a deficient number, since it is larger than the sum of its proper divisors (163408951).

1223132009 is a wasteful number, since it uses less digits than its factorization.

1223132009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501 (or 2490 counting only the distinct ones).

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

The square root of 1223132009 is about 34973.3042333721. The cubic root of 1223132009 is about 1069.4433325945.

The spelling of 1223132009 in words is "one billion, two hundred twenty-three million, one hundred thirty-two thousand, nine".