2523121213 has 4 divisors (see below), whose sum is σ = 2526328000. Its totient is φ = 2519914428.

The previous prime is 2523121187. The next prime is 2523121219. The reversal of 2523121213 is 3121213252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2523121213 - 2⁹ = 2523120701 is a prime.

It is a super-2 number, since 2×2523121213² = 12732281310981182738, which 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 (2523121219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602213 + ... + 1603786.

It is an arithmetic number, because the mean of its divisors is an integer number (631582000).

Almost surely, 2^2523121213 is an apocalyptic number.

It is an amenable number.

2523121213 is a deficient number, since it is larger than the sum of its proper divisors (3206787).

2523121213 is an equidigital number, since it uses as much as digits as its factorization.

2523121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206786.

The product of its digits is 720, while the sum is 22.

The square root of 2523121213 is about 50230.6799973881. The cubic root of 2523121213 is about 1361.3800173415.

Adding to 2523121213 its reverse (3121213252), we get a palindrome (5644334465).

The spelling of 2523121213 in words is "two billion, five hundred twenty-three million, one hundred twenty-one thousand, two hundred thirteen".