6670000121 has 2 divisors, whose sum is σ = 6670000122. Its totient is φ = 6670000120.

The previous prime is 6670000097. The next prime is 6670000123. The reversal of 6670000121 is 1210000766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6635894521 + 34105600 = 81461^2 + 5840^2 .

It is a cyclic number.

It is not a de Polignac number, because 6670000121 - 2¹⁴ = 6669983737 is a prime.

It is a super-2 number, since 2×6670000121² = 88977803228280029282, which contains 22 as substring.

Together with 6670000123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6670000123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335000060 + 3335000061.

It is an arithmetic number, because the mean of its divisors is an integer number (3335000061).

Almost surely, 2^6670000121 is an apocalyptic number.

It is an amenable number.

6670000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6670000121 is an equidigital number, since it uses as much as digits as its factorization.

6670000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 6670000121 is about 81670.0686971671. The cubic root of 6670000121 is about 1882.3856955558.

Adding to 6670000121 its reverse (1210000766), we get a palindrome (7880000887).

The spelling of 6670000121 in words is "six billion, six hundred seventy million, one hundred twenty-one", and thus it is an aban number.