1199548232081 has 2 divisors, whose sum is σ = 1199548232082. Its totient is φ = 1199548232080.

The previous prime is 1199548232041. The next prime is 1199548232107. The reversal of 1199548232081 is 1802328459911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1189318932481 + 10229299600 = 1090559^2 + 101140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1199548232081 - 2⁶ = 1199548232017 is a prime.

It is a super-2 number, since 2×1199548232081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1199548232041) by changing a digit.

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 as a sum of consecutive naturals, namely, 599774116040 + 599774116041.

It is an arithmetic number, because the mean of its divisors is an integer number (599774116041).

Almost surely, 2^{1199548232081} is an apocalyptic number.

It is an amenable number.

1199548232081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199548232081 is an equidigital number, since it uses as much as digits as its factorization.

1199548232081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 1199548232081 in words is "one trillion, one hundred ninety-nine billion, five hundred forty-eight million, two hundred thirty-two thousand, eighty-one".