1223541512 has 36 divisors (see below), whose sum is σ = 2337802845. Its totient is φ = 600343648.

The previous prime is 1223541503. The next prime is 1223541521. The reversal of 1223541512 is 2151453221.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (1223541503) and next prime (1223541521).

It can be written as a sum of positive squares in 2 ways, for example, as 1005270436 + 218271076 = 31706^2 + 14774^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=24734.

It is a super-2 number, since 2×1223541512² = 2994107663174492288, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8211614 + ... + 8211762.

Almost surely, 2^1223541512 is an apocalyptic number.

It is an amenable number.

1223541512 is a deficient number, since it is larger than the sum of its proper divisors (1114261333).

1223541512 is an frugal number, since it uses more digits than its factorization.

1223541512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 234 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 1223541512 is about 34979.1582517361. The cubic root of 1223541512 is about 1069.5626686882.

Adding to 1223541512 its reverse (2151453221), we get a palindrome (3374994733).

The spelling of 1223541512 in words is "one billion, two hundred twenty-three million, five hundred forty-one thousand, five hundred twelve".