1200202012321 has 8 divisors (see below), whose sum is σ = 1292569102440. Its totient is φ = 1107841187712.

The previous prime is 1200202012249. The next prime is 1200202012327. The reversal of 1200202012321 is 1232102020021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 341681166225 + 858520846096 = 584535^2 + 926564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200202012321 - 2²¹ = 1200199915169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200202012295 and 1200202012304.

It is not an unprimeable number, because it can be changed into a prime (1200202012327) 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, 1164706 + ... + 1938283.

It is an arithmetic number, because the mean of its divisors is an integer number (161571137805).

Almost surely, 2^{1200202012321} is an apocalyptic number.

It is an amenable number.

1200202012321 is a deficient number, since it is larger than the sum of its proper divisors (92367090119).

1200202012321 is a wasteful number, since it uses less digits than its factorization.

1200202012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132755.

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

Adding to 1200202012321 its reverse (1232102020021), we get a palindrome (2432304032342).

The spelling of 1200202012321 in words is "one trillion, two hundred billion, two hundred two million, twelve thousand, three hundred twenty-one".