1101009997 has 2 divisors, whose sum is σ = 1101009998. Its totient is φ = 1101009996.

The previous prime is 1101009979. The next prime is 1101010019. The reversal of 1101009997 is 7999001011.

Together with previous prime (1101009979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1072824516 + 28185481 = 32754^2 + 5309^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101009997 - 2⁷ = 1101009869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101009937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550504998 + 550504999.

It is an arithmetic number, because the mean of its divisors is an integer number (550504999).

Almost surely, 2^1101009997 is an apocalyptic number.

It is an amenable number.

1101009997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101009997 is an equidigital number, since it uses as much as digits as its factorization.

1101009997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 37.

The square root of 1101009997 is about 33181.4706877197. The cubic root of 1101009997 is about 1032.5959581487.

The spelling of 1101009997 in words is "one billion, one hundred one million, nine thousand, nine hundred ninety-seven".