1220055412 has 12 divisors (see below), whose sum is σ = 2137878820. Its totient is φ = 609232896.

The previous prime is 1220055377. The next prime is 1220055451. The reversal of 1220055412 is 2145500221.

It can be written as a sum of positive squares in 2 ways, for example, as 878766736 + 341288676 = 29644^2 + 18474^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 195243 + ... + 201394.

Almost surely, 2^1220055412 is an apocalyptic number.

It is an amenable number.

1220055412 is a deficient number, since it is larger than the sum of its proper divisors (917823408).

1220055412 is a wasteful number, since it uses less digits than its factorization.

1220055412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397410 (or 397408 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1220055412 is about 34929.2916046117. The cubic root of 1220055412 is about 1068.5459073273.

Adding to 1220055412 its reverse (2145500221), we get a palindrome (3365555633).

The spelling of 1220055412 in words is "one billion, two hundred twenty million, fifty-five thousand, four hundred twelve".