1222500045 has 16 divisors (see below), whose sum is σ = 2106461952. Its totient is φ = 601846080.

The previous prime is 1222499989. The next prime is 1222500053. The reversal of 1222500045 is 5400052221.

It is a happy number.

It is not a de Polignac number, because 1222500045 - 2⁷ = 1222499917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222499994 and 1222500030.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3134421 + ... + 3134810.

It is an arithmetic number, because the mean of its divisors is an integer number (131653872).

Almost surely, 2^1222500045 is an apocalyptic number.

1222500045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222500045 is a deficient number, since it is larger than the sum of its proper divisors (883961907).

1222500045 is a wasteful number, since it uses less digits than its factorization.

1222500045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6269252.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1222500045 is about 34964.2681176083. The cubic root of 1222500045 is about 1069.2591153246.

Adding to 1222500045 its reverse (5400052221), we get a palindrome (6622552266).

The spelling of 1222500045 in words is "one billion, two hundred twenty-two million, five hundred thousand, forty-five".