1220404225000 has 48 divisors (see below), whose sum is σ = 2860139400300. Its totient is φ = 488161680000.

The previous prime is 1220404224931. The next prime is 1220404225009. The reversal of 1220404225000 is 5224040221.

It can be written as a sum of positive squares in 6 ways, for example, as 326838603204 + 893565621796 = 571698^2 + 945286^2 .

It is not an unprimeable number, because it can be changed into a prime (1220404225009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24383085 + ... + 24433084.

Almost surely, 2^{1220404225000} is an apocalyptic number.

1220404225000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220404225000 is an abundant number, since it is smaller than the sum of its proper divisors (1639735175300).

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

1220404225000 is an frugal number, since it uses more digits than its factorization.

1220404225000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48816200 (or 48816176 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 1220404225000 its reverse (5224040221), we get a palindrome (1225628265221).

The spelling of 1220404225000 in words is "one trillion, two hundred twenty billion, four hundred four million, two hundred twenty-five thousand".