2104100121 has 16 divisors (see below), whose sum is σ = 2824593408. Its totient is φ = 1393194000.

The previous prime is 2104100113. The next prime is 2104100137. The reversal of 2104100121 is 1210014012.

It is a happy number.

It is not a de Polignac number, because 2104100121 - 2³ = 2104100113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2104100097 and 2104100106.

It is not an unprimeable number, because it can be changed into a prime (2104100161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414046 + ... + 419096.

It is an arithmetic number, because the mean of its divisors is an integer number (176537088).

Almost surely, 2^2104100121 is an apocalyptic number.

It is an amenable number.

2104100121 is a deficient number, since it is larger than the sum of its proper divisors (720493287).

2104100121 is a wasteful number, since it uses less digits than its factorization.

2104100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2104100121 is about 45870.4711224988. The cubic root of 2104100121 is about 1281.4120405615.

Adding to 2104100121 its reverse (1210014012), we get a palindrome (3314114133).

The spelling of 2104100121 in words is "two billion, one hundred four million, one hundred thousand, one hundred twenty-one".