70121017 has 2 divisors, whose sum is σ = 70121018. Its totient is φ = 70121016.

The previous prime is 70121011. The next prime is 70121027. The reversal of 70121017 is 71012107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40755456 + 29365561 = 6384^2 + 5419^2 .

It is an emirp because it is prime and its reverse (71012107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70121017 - 2⁷ = 70120889 is a prime.

It is a super-2 number, since 2×70121017² = 9833914050228578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70120985 and 70121003.

It is not a weakly prime, because it can be changed into another prime (70121011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35060508 + 35060509.

It is an arithmetic number, because the mean of its divisors is an integer number (35060509).

Almost surely, 2^70121017 is an apocalyptic number.

It is an amenable number.

70121017 is a deficient number, since it is larger than the sum of its proper divisors (1).

70121017 is an equidigital number, since it uses as much as digits as its factorization.

70121017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 70121017 is about 8373.8292913099. The cubic root of 70121017 is about 412.3658911456.

The spelling of 70121017 in words is "seventy million, one hundred twenty-one thousand, seventeen".