2123505213 has 8 divisors (see below), whose sum is σ = 2846983776. Its totient is φ = 1407848400.

The previous prime is 2123505211. The next prime is 2123505217. The reversal of 2123505213 is 3125053212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2123505213 - 2¹ = 2123505211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123505211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1954803 + ... + 1955888.

It is an arithmetic number, because the mean of its divisors is an integer number (355872972).

Almost surely, 2^2123505213 is an apocalyptic number.

It is an amenable number.

2123505213 is a deficient number, since it is larger than the sum of its proper divisors (723478563).

2123505213 is a wasteful number, since it uses less digits than its factorization.

2123505213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910875.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2123505213 is about 46081.5061928318. The cubic root of 2123505213 is about 1285.3392722027.

Adding to 2123505213 its reverse (3125053212), we get a palindrome (5248558425).

The spelling of 2123505213 in words is "two billion, one hundred twenty-three million, five hundred five thousand, two hundred thirteen".