1220225515313 has 24 divisors (see below), whose sum is σ = 1511633616000. Its totient is φ = 984383529024.

The previous prime is 1220225515283. The next prime is 1220225515319. The reversal of 1220225515313 is 3135155220221.

It is not a de Polignac number, because 1220225515313 - 2²⁰ = 1220224466737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220225515313.

It is not an unprimeable number, because it can be changed into a prime (1220225515319) 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, 6055733 + ... + 6253986.

It is an arithmetic number, because the mean of its divisors is an integer number (62984734000).

Almost surely, 2^{1220225515313} is an apocalyptic number.

It is an amenable number.

1220225515313 is a deficient number, since it is larger than the sum of its proper divisors (291408100687).

1220225515313 is an equidigital number, since it uses as much as digits as its factorization.

1220225515313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12309774 (or 12309743 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 1220225515313 in words is "one trillion, two hundred twenty billion, two hundred twenty-five million, five hundred fifteen thousand, three hundred thirteen".