1222518045 has 32 divisors (see below), whose sum is σ = 2353121280. Its totient is φ = 529450560.

The previous prime is 1222518043. The next prime is 1222518047. The reversal of 1222518045 is 5408152221.

It is an interprime number because it is at equal distance from previous prime (1222518043) and next prime (1222518047).

It is not a de Polignac number, because 1222518045 - 2¹ = 1222518043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222518041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304401 + ... + 308390.

It is an arithmetic number, because the mean of its divisors is an integer number (73535040).

Almost surely, 2^1222518045 is an apocalyptic number.

1222518045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222518045 is a deficient number, since it is larger than the sum of its proper divisors (1130603235).

1222518045 is a wasteful number, since it uses less digits than its factorization.

1222518045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612825.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 1222518045 is about 34964.5255223062. The cubic root of 1222518045 is about 1069.2643631961.

The spelling of 1222518045 in words is "one billion, two hundred twenty-two million, five hundred eighteen thousand, forty-five".