1222363765 has 16 divisors (see below), whose sum is σ = 1764616320. Its totient is φ = 794076480.

The previous prime is 1222363721. The next prime is 1222363777. The reversal of 1222363765 is 5673632221.

It is not a de Polignac number, because 1222363765 - 2²⁵ = 1188809333 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 918406 + ... + 919735.

It is an arithmetic number, because the mean of its divisors is an integer number (110288520).

Almost surely, 2^1222363765 is an apocalyptic number.

It is an amenable number.

1222363765 is a deficient number, since it is larger than the sum of its proper divisors (542252555).

1222363765 is a wasteful number, since it uses less digits than its factorization.

1222363765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838172.

The product of its digits is 90720, while the sum is 37.

The square root of 1222363765 is about 34962.3192165508. The cubic root of 1222363765 is about 1069.2193814345.

Adding to 1222363765 its reverse (5673632221), we get a palindrome (6895995986).

The spelling of 1222363765 in words is "one billion, two hundred twenty-two million, three hundred sixty-three thousand, seven hundred sixty-five".