1220552013504 has 56 divisors (see below), whose sum is σ = 3369784919040. Its totient is φ = 389161510144.

The previous prime is 1220552013503. The next prime is 1220552013511. The reversal of 1220552013504 is 4053102550221.

It is not an unprimeable number, because it can be changed into a prime (1220552013503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138192144 + ... + 138200975.

Almost surely, 2^{1220552013504} is an apocalyptic number.

It is an amenable number.

1220552013504 is an abundant number, since it is smaller than the sum of its proper divisors (2149232905536).

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

1220552013504 is a wasteful number, since it uses less digits than its factorization.

1220552013504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276393157 (or 276393147 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 1220552013504 its reverse (4053102550221), we get a palindrome (5273654563725).

The spelling of 1220552013504 in words is "one trillion, two hundred twenty billion, five hundred fifty-two million, thirteen thousand, five hundred four".