1100212129 has 2 divisors, whose sum is σ = 1100212130. Its totient is φ = 1100212128.

The previous prime is 1100212097. The next prime is 1100212151. The reversal of 1100212129 is 9212120011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559417104 + 540795025 = 23652^2 + 23255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100212129 - 2⁵ = 1100212097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100212189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550106064 + 550106065.

It is an arithmetic number, because the mean of its divisors is an integer number (550106065).

Almost surely, 2^1100212129 is an apocalyptic number.

It is an amenable number.

1100212129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100212129 is an equidigital number, since it uses as much as digits as its factorization.

1100212129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1100212129 is about 33169.4457143920. The cubic root of 1100212129 is about 1032.3464677212.

The spelling of 1100212129 in words is "one billion, one hundred million, two hundred twelve thousand, one hundred twenty-nine".