1200321104261 has 2 divisors, whose sum is σ = 1200321104262. Its totient is φ = 1200321104260.

The previous prime is 1200321104249. The next prime is 1200321104273. The reversal of 1200321104261 is 1624011230021.

It is a balanced prime because it is at equal distance from previous prime (1200321104249) and next prime (1200321104273).

It can be written as a sum of positive squares in only one way, i.e., 765388768225 + 434932336036 = 874865^2 + 659494^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200321104261 - 2³⁰ = 1199247362437 is a prime.

It is a super-2 number, since 2×1200321104261² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200321104201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600160552130 + 600160552131.

It is an arithmetic number, because the mean of its divisors is an integer number (600160552131).

Almost surely, 2^{1200321104261} is an apocalyptic number.

It is an amenable number.

1200321104261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200321104261 is an equidigital number, since it uses as much as digits as its factorization.

1200321104261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1200321104261 its reverse (1624011230021), we get a palindrome (2824332334282).

The spelling of 1200321104261 in words is "one trillion, two hundred billion, three hundred twenty-one million, one hundred four thousand, two hundred sixty-one".