1200201201220 has 96 divisors (see below), whose sum is σ = 3081366150912. Its totient is φ = 383299043328.

The previous prime is 1200201201217. The next prime is 1200201201257. The reversal of 1200201201220 is 221021020021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200201201220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2368554 + ... + 2830273.

It is an arithmetic number, because the mean of its divisors is an integer number (32097564072).

Almost surely, 2^{1200201201220} is an apocalyptic number.

1200201201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200201201220 is an abundant number, since it is smaller than the sum of its proper divisors (1881164949692).

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

1200201201220 is a wasteful number, since it uses less digits than its factorization.

1200201201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198957 (or 5198955 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200201201220 its reverse (221021020021), we get a palindrome (1421222221241).

The spelling of 1200201201220 in words is "one trillion, two hundred billion, two hundred one million, two hundred one thousand, two hundred twenty".