1213224461 has 8 divisors (see below), whose sum is σ = 1286402880. Its totient is φ = 1140978528.

The previous prime is 1213224443. The next prime is 1213224497. The reversal of 1213224461 is 1644223121.

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-1213224461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213224461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213224421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230441 + ... + 235646.

It is an arithmetic number, because the mean of its divisors is an integer number (160800360).

Almost surely, 2^1213224461 is an apocalyptic number.

It is an amenable number.

1213224461 is a deficient number, since it is larger than the sum of its proper divisors (73178419).

1213224461 is a wasteful number, since it uses less digits than its factorization.

1213224461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466243.

The product of its digits is 2304, while the sum is 26.

The square root of 1213224461 is about 34831.3717932556. The cubic root of 1213224461 is about 1066.5479517078.

Adding to 1213224461 its reverse (1644223121), we get a palindrome (2857447582).

The spelling of 1213224461 in words is "one billion, two hundred thirteen million, two hundred twenty-four thousand, four hundred sixty-one".