1220505514 has 16 divisors (see below), whose sum is σ = 1940257800. Its totient is φ = 573819904.

The previous prime is 1220505509. The next prime is 1220505521. The reversal of 1220505514 is 4155050221.

It can be written as a sum of positive squares in 4 ways, for example, as 519156225 + 701349289 = 22785^2 + 26483^2 .

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 7 ways as a sum of consecutive naturals, for example, 21522 + ... + 53890.

Almost surely, 2^1220505514 is an apocalyptic number.

1220505514 is a deficient number, since it is larger than the sum of its proper divisors (719752286).

1220505514 is a wasteful number, since it uses less digits than its factorization.

1220505514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33497.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1220505514 is about 34935.7340555483. The cubic root of 1220505514 is about 1068.6772935777.

Adding to 1220505514 its reverse (4155050221), we get a palindrome (5375555735).

The spelling of 1220505514 in words is "one billion, two hundred twenty million, five hundred five thousand, five hundred fourteen".