1101323453261 has 2 divisors, whose sum is σ = 1101323453262. Its totient is φ = 1101323453260.

The previous prime is 1101323453221. The next prime is 1101323453297. The reversal of 1101323453261 is 1623543231011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098316576036 + 3006877225 = 1048006^2 + 54835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101323453261 - 2³⁴ = 1084143584077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101323453221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550661726630 + 550661726631.

It is an arithmetic number, because the mean of its divisors is an integer number (550661726631).

Almost surely, 2^{1101323453261} is an apocalyptic number.

It is an amenable number.

1101323453261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101323453261 is an equidigital number, since it uses as much as digits as its factorization.

1101323453261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 1101323453261 its reverse (1623543231011), we get a palindrome (2724866684272).

The spelling of 1101323453261 in words is "one trillion, one hundred one billion, three hundred twenty-three million, four hundred fifty-three thousand, two hundred sixty-one".