6900204121 has 2 divisors, whose sum is σ = 6900204122. Its totient is φ = 6900204120.

The previous prime is 6900204097. The next prime is 6900204127. The reversal of 6900204121 is 1214020096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6885680400 + 14523721 = 82980^2 + 3811^2 .

It is a cyclic number.

It is not a de Polignac number, because 6900204121 - 2⁷ = 6900203993 is a prime.

It is a super-2 number, since 2×6900204121² = 95225633822930765282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6900204127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3450102060 + 3450102061.

It is an arithmetic number, because the mean of its divisors is an integer number (3450102061).

Almost surely, 2^6900204121 is an apocalyptic number.

It is an amenable number.

6900204121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6900204121 is an equidigital number, since it uses as much as digits as its factorization.

6900204121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 6900204121 is about 83067.4672841300. The cubic root of 6900204121 is about 1903.7970347793.

The spelling of 6900204121 in words is "six billion, nine hundred million, two hundred four thousand, one hundred twenty-one".