1222505011 has 32 divisors (see below), whose sum is σ = 1589091840. Its totient is φ = 913296384.

The previous prime is 1222504967. The next prime is 1222505017. The reversal of 1222505011 is 1105052221.

It is not a de Polignac number, because 1222505011 - 2²³ = 1214116403 is a prime.

It is a super-2 number, since 2×1222505011² = 2989037003840220242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1222505011.

It is not an unprimeable number, because it can be changed into a prime (1222505017) 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 31 ways as a sum of consecutive naturals, for example, 609336 + ... + 611338.

It is an arithmetic number, because the mean of its divisors is an integer number (49659120).

Almost surely, 2^1222505011 is an apocalyptic number.

1222505011 is a deficient number, since it is larger than the sum of its proper divisors (366586829).

1222505011 is a wasteful number, since it uses less digits than its factorization.

1222505011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1222505011 is about 34964.3391328937. The cubic root of 1222505011 is about 1069.2605631592.

Adding to 1222505011 its reverse (1105052221), we get a palindrome (2327557232).

The spelling of 1222505011 in words is "one billion, two hundred twenty-two million, five hundred five thousand, eleven".