1200220112320 has 56 divisors (see below), whose sum is σ = 2858159977344. Its totient is φ = 480065227776.

The previous prime is 1200220112317. The next prime is 1200220112321. The reversal of 1200220112320 is 232110220021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1200220112294 and 1200220112303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200220112321) 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, 7722417 + ... + 7876303.

It is an arithmetic number, because the mean of its divisors is an integer number (51038571024).

Almost surely, 2^{1200220112320} is an apocalyptic number.

1200220112320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200220112320 is an abundant number, since it is smaller than the sum of its proper divisors (1657939865024).

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

1200220112320 is a wasteful number, since it uses less digits than its factorization.

1200220112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178277 (or 178267 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1200220112320 its reverse (232110220021), we get a palindrome (1432330332341).

The spelling of 1200220112320 in words is "one trillion, two hundred billion, two hundred twenty million, one hundred twelve thousand, three hundred twenty".