3104120021 has 2 divisors, whose sum is σ = 3104120022. Its totient is φ = 3104120020.

The previous prime is 3104120011. The next prime is 3104120053. The reversal of 3104120021 is 1200214013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3104049796 + 70225 = 55714^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 3104120021 - 2¹⁸ = 3103857877 is a prime.

It is a super-2 number, since 2×3104120021² = 19271122209546080882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3104119978 and 3104120005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3104120011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1552060010 + 1552060011.

It is an arithmetic number, because the mean of its divisors is an integer number (1552060011).

Almost surely, 2^3104120021 is an apocalyptic number.

It is an amenable number.

3104120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3104120021 is an equidigital number, since it uses as much as digits as its factorization.

3104120021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3104120021 is about 55714.6302240264. The cubic root of 3104120021 is about 1458.7454070243.

Adding to 3104120021 its reverse (1200214013), we get a palindrome (4304334034).

The spelling of 3104120021 in words is "three billion, one hundred four million, one hundred twenty thousand, twenty-one".