1100320129 has 2 divisors, whose sum is σ = 1100320130. Its totient is φ = 1100320128.

The previous prime is 1100320099. The next prime is 1100320139. The reversal of 1100320129 is 9210230011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 951845904 + 148474225 = 30852^2 + 12185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100320129 - 2²³ = 1091931521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100320139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550160064 + 550160065.

It is an arithmetic number, because the mean of its divisors is an integer number (550160065).

Almost surely, 2^1100320129 is an apocalyptic number.

It is an amenable number.

1100320129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100320129 is an equidigital number, since it uses as much as digits as its factorization.

1100320129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1100320129 is about 33171.0736787340. The cubic root of 1100320129 is about 1032.3802459862.

The spelling of 1100320129 in words is "one billion, one hundred million, three hundred twenty thousand, one hundred twenty-nine".