1222565641 has 8 divisors (see below), whose sum is σ = 1340620704. Its totient is φ = 1105662720.

The previous prime is 1222565639. The next prime is 1222565671. The reversal of 1222565641 is 1465652221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222565641 - 2¹ = 1222565639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222565597 and 1222565606.

It is not an unprimeable number, because it can be changed into a prime (1222565671) 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 7 ways as a sum of consecutive naturals, for example, 285811 + ... + 290056.

It is an arithmetic number, because the mean of its divisors is an integer number (167577588).

Almost surely, 2^1222565641 is an apocalyptic number.

1222565641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222565641 is a deficient number, since it is larger than the sum of its proper divisors (118055063).

1222565641 is a wasteful number, since it uses less digits than its factorization.

1222565641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576071.

The product of its digits is 28800, while the sum is 34.

The square root of 1222565641 is about 34965.2061483984. The cubic root of 1222565641 is about 1069.2782394865.

The spelling of 1222565641 in words is "one billion, two hundred twenty-two million, five hundred sixty-five thousand, six hundred forty-one".