120104021 has 2 divisors, whose sum is σ = 120104022. Its totient is φ = 120104020.

The previous prime is 120104011. The next prime is 120104063. The reversal of 120104021 is 120401021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75881521 + 44222500 = 8711^2 + 6650^2 .

It is a cyclic number.

It is not a de Polignac number, because 120104021 - 2⁶ = 120103957 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 120103993 and 120104011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120104011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60052010 + 60052011.

It is an arithmetic number, because the mean of its divisors is an integer number (60052011).

Almost surely, 2^120104021 is an apocalyptic number.

It is an amenable number.

120104021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120104021 is an equidigital number, since it uses as much as digits as its factorization.

120104021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 120104021 is about 10959.1980089786. The cubic root of 120104021 is about 493.3848947305.

Adding to 120104021 its reverse (120401021), we get a palindrome (240505042).

The spelling of 120104021 in words is "one hundred twenty million, one hundred four thousand, twenty-one".