1220003113200 has 60 divisors (see below), whose sum is σ = 3908076643128. Its totient is φ = 325334163200.

The previous prime is 1220003113183. The next prime is 1220003113207. The reversal of 1220003113200 is 23113000221.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1220003113200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220003113207) 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, 508333431 + ... + 508335830.

Almost surely, 2^{1220003113200} is an apocalyptic number.

1220003113200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220003113200 is an abundant number, since it is smaller than the sum of its proper divisors (2688073529928).

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

1220003113200 is a wasteful number, since it uses less digits than its factorization.

1220003113200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016669282 (or 1016669271 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1220003113200 its reverse (23113000221), we get a palindrome (1243116113421).

The spelling of 1220003113200 in words is "one trillion, two hundred twenty billion, three million, one hundred thirteen thousand, two hundred".