1220504532255 has 64 divisors (see below), whose sum is σ = 2289438144000. Its totient is φ = 615203652096.

The previous prime is 1220504532251. The next prime is 1220504532263. The reversal of 1220504532255 is 5522354050221.

1220504532255 is a `hidden beast` number, since 1 + 2 + 20 + 50 + 4 + 532 + 2 + 55 = 666.

It is not a de Polignac number, because 1220504532255 - 2² = 1220504532251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220504532251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 506919 + ... + 1642551.

It is an arithmetic number, because the mean of its divisors is an integer number (35772471000).

Almost surely, 2^{1220504532255} is an apocalyptic number.

1220504532255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220504532255 is a deficient number, since it is larger than the sum of its proper divisors (1068933611745).

1220504532255 is a wasteful number, since it uses less digits than its factorization.

1220504532255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136085 (or 1136079 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 1220504532255 its reverse (5522354050221), we get a palindrome (6742858582476).

The spelling of 1220504532255 in words is "one trillion, two hundred twenty billion, five hundred four million, five hundred thirty-two thousand, two hundred fifty-five".