2123130220213 has 4 divisors (see below), whose sum is σ = 2123147423980. Its totient is φ = 2123113016448.

The previous prime is 2123130220207. The next prime is 2123130220261. The reversal of 2123130220213 is 3120220313212.

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 481305712644 + 1641824507569 = 693762^2 + 1281337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123130220213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123131220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8415420 + ... + 8664037.

It is an arithmetic number, because the mean of its divisors is an integer number (530786855995).

Almost surely, 2^{2123130220213} is an apocalyptic number.

It is an amenable number.

2123130220213 is a deficient number, since it is larger than the sum of its proper divisors (17203767).

2123130220213 is a wasteful number, since it uses less digits than its factorization.

2123130220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17203766.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2123130220213 its reverse (3120220313212), we get a palindrome (5243350533425).

The spelling of 2123130220213 in words is "two trillion, one hundred twenty-three billion, one hundred thirty million, two hundred twenty thousand, two hundred thirteen".