1101329081 has 2 divisors, whose sum is σ = 1101329082. Its totient is φ = 1101329080.

The previous prime is 1101329077. The next prime is 1101329107. The reversal of 1101329081 is 1809231011.

It is an a-pointer prime, because the next prime (1101329107) can be obtained adding 1101329081 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 985960000 + 115369081 = 31400^2 + 10741^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101329081 - 2² = 1101329077 is a prime.

It is a super-2 number, since 2×1101329081² = 2425851489312609122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101329081.

It is not a weakly prime, because it can be changed into another prime (1101329381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550664540 + 550664541.

It is an arithmetic number, because the mean of its divisors is an integer number (550664541).

Almost surely, 2^1101329081 is an apocalyptic number.

It is an amenable number.

1101329081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101329081 is an equidigital number, since it uses as much as digits as its factorization.

1101329081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1101329081 is about 33186.2785048279. The cubic root of 1101329081 is about 1032.6957008169.

The spelling of 1101329081 in words is "one billion, one hundred one million, three hundred twenty-nine thousand, eighty-one".