2104024123213 has 4 divisors (see below), whose sum is σ = 2104032623868. Its totient is φ = 2104015622560.

The previous prime is 2104024123211. The next prime is 2104024123259. The reversal of 2104024123213 is 3123214204012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1199248390404 + 904775732809 = 1095102^2 + 951197^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104024123213 - 2¹ = 2104024123211 is a prime.

It is a super-2 number, since 2×2104024123213² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104024123211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3867568 + ... + 4377913.

It is an arithmetic number, because the mean of its divisors is an integer number (526008155967).

Almost surely, 2^{2104024123213} is an apocalyptic number.

It is an amenable number.

2104024123213 is a deficient number, since it is larger than the sum of its proper divisors (8500655).

2104024123213 is an equidigital number, since it uses as much as digits as its factorization.

2104024123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8500654.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2104024123213 its reverse (3123214204012), we get a palindrome (5227238327225).

The spelling of 2104024123213 in words is "two trillion, one hundred four billion, twenty-four million, one hundred twenty-three thousand, two hundred thirteen".