1220553214056 has 96 divisors (see below), whose sum is σ = 3730531053600. Its totient is φ = 357110651520.

The previous prime is 1220553214051. The next prime is 1220553214057. The reversal of 1220553214056 is 6504123550221.

1220553214056 is a `hidden beast` number, since 1 + 220 + 5 + 5 + 3 + 21 + 405 + 6 = 666.

It is a super-2 number, since 2×1220553214056² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1220553214056.

It is not an unprimeable number, because it can be changed into a prime (1220553214051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26547766 + ... + 26593701.

It is an arithmetic number, because the mean of its divisors is an integer number (38859698475).

Almost surely, 2^{1220553214056} is an apocalyptic number.

It is an amenable number.

1220553214056 is an abundant number, since it is smaller than the sum of its proper divisors (2509977839544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220553214056 is a wasteful number, since it uses less digits than its factorization.

1220553214056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53141519 (or 53141512 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 1220553214056 its reverse (6504123550221), we get a palindrome (7724676764277).

The spelling of 1220553214056 in words is "one trillion, two hundred twenty billion, five hundred fifty-three million, two hundred fourteen thousand, fifty-six".