1101001997 has 2 divisors, whose sum is σ = 1101001998. Its totient is φ = 1101001996.

The previous prime is 1101001963. The next prime is 1101002003. The reversal of 1101001997 is 7991001011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 821911561 + 279090436 = 28669^2 + 16706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101001997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101001597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550500998 + 550500999.

It is an arithmetic number, because the mean of its divisors is an integer number (550500999).

Almost surely, 2^1101001997 is an apocalyptic number.

It is an amenable number.

1101001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101001997 is an equidigital number, since it uses as much as digits as its factorization.

1101001997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 29.

The square root of 1101001997 is about 33181.3501382930. The cubic root of 1101001997 is about 1032.5934571760.

The spelling of 1101001997 in words is "one billion, one hundred one million, one thousand, nine hundred ninety-seven".