1090121017 has 8 divisors (see below), whose sum is σ = 1108132256. Its totient is φ = 1072248192.

The previous prime is 1090121009. The next prime is 1090121051. The reversal of 1090121017 is 7101210901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1090121017 - 2³ = 1090121009 is a prime.

It is a super-2 number, since 2×1090121017² = 2376727663410228578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1090124017) 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 in 7 ways as a sum of consecutive naturals, for example, 18663 + ... + 50284.

It is an arithmetic number, because the mean of its divisors is an integer number (138516532).

Almost surely, 2^1090121017 is an apocalyptic number.

It is an amenable number.

1090121017 is a deficient number, since it is larger than the sum of its proper divisors (18011239).

1090121017 is an equidigital number, since it uses as much as digits as its factorization.

1090121017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69207.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 1090121017 is about 33016.9807371904. The cubic root of 1090121017 is about 1029.1805519308.

Adding to 1090121017 its reverse (7101210901), we get a palindrome (8191331918).

The spelling of 1090121017 in words is "one billion, ninety million, one hundred twenty-one thousand, seventeen".