6900121 has 2 divisors, whose sum is σ = 6900122. Its totient is φ = 6900120.

The previous prime is 6900083. The next prime is 6900149. The reversal of 6900121 is 1210096.

6900121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6864400 + 35721 = 2620^2 + 189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6900121 is a prime.

It is a super-2 number, since 2×6900121² = 95223339629282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6900151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3450060 + 3450061.

It is an arithmetic number, because the mean of its divisors is an integer number (3450061).

Almost surely, 2^6900121 is an apocalyptic number.

It is an amenable number.

6900121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6900121 is an equidigital number, since it uses as much as digits as its factorization.

6900121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 6900121 is about 2626.8081391681. The cubic root of 6900121 is about 190.3789390264.

It can be divided in two parts, 6900 and 121, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 6900121 in words is "six million, nine hundred thousand, one hundred twenty-one".