1200200332121 has 12 divisors (see below), whose sum is σ = 1444294560420. Its totient is φ = 993269239200.

The previous prime is 1200200332087. The next prime is 1200200332139. The reversal of 1200200332121 is 1212330020021.

It can be written as a sum of positive squares in 2 ways, for example, as 1010919648025 + 189280684096 = 1005445^2 + 435064^2 .

It is not a de Polignac number, because 1200200332121 - 2²² = 1200196137817 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 1200200332121.

It is not an unprimeable number, because it can be changed into a prime (1200200332421) 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, 422306930 + ... + 422309771.

It is an arithmetic number, because the mean of its divisors is an integer number (120357880035).

Almost surely, 2^{1200200332121} is an apocalyptic number.

It is an amenable number.

1200200332121 is a deficient number, since it is larger than the sum of its proper divisors (244094228299).

1200200332121 is an equidigital number, since it uses as much as digits as its factorization.

1200200332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844616744 (or 844616737 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1200200332121 its reverse (1212330020021), we get a palindrome (2412530352142).

The spelling of 1200200332121 in words is "one trillion, two hundred billion, two hundred million, three hundred thirty-two thousand, one hundred twenty-one".