6650121017 has 2 divisors, whose sum is σ = 6650121018. Its totient is φ = 6650121016.

The previous prime is 6650121007. The next prime is 6650121059. The reversal of 6650121017 is 7101210566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3796531456 + 2853589561 = 61616^2 + 53419^2 .

It is a cyclic number.

It is not a de Polignac number, because 6650121017 - 2⁴ = 6650121001 is a prime.

It is a super-2 number, since 2×6650121017² = 88448219081490228578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6650121007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325060508 + 3325060509.

It is an arithmetic number, because the mean of its divisors is an integer number (3325060509).

Almost surely, 2^6650121017 is an apocalyptic number.

It is an amenable number.

6650121017 is a deficient number, since it is larger than the sum of its proper divisors (1).

6650121017 is an equidigital number, since it uses as much as digits as its factorization.

6650121017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 6650121017 is about 81548.2741509592. The cubic root of 6650121017 is about 1880.5137626542.

The spelling of 6650121017 in words is "six billion, six hundred fifty million, one hundred twenty-one thousand, seventeen".