1100801129 has 2 divisors, whose sum is σ = 1100801130. Its totient is φ = 1100801128.

The previous prime is 1100801113. The next prime is 1100801159. The reversal of 1100801129 is 9211080011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600250000 + 500551129 = 24500^2 + 22373^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100801129 - 2⁴ = 1100801113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100801159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550400564 + 550400565.

It is an arithmetic number, because the mean of its divisors is an integer number (550400565).

Almost surely, 2^1100801129 is an apocalyptic number.

It is an amenable number.

1100801129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100801129 is an equidigital number, since it uses as much as digits as its factorization.

1100801129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 1100801129 is about 33178.3231794496. The cubic root of 1100801129 is about 1032.5306575329.

The spelling of 1100801129 in words is "one billion, one hundred million, eight hundred one thousand, one hundred twenty-nine".