2521061213 has 4 divisors (see below), whose sum is σ = 2750248608. Its totient is φ = 2291873820.

The previous prime is 2521061197. The next prime is 2521061237. The reversal of 2521061213 is 3121601252.

2521061213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2521061213 - 2⁴ = 2521061197 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 (2521061293) 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, 114593681 + ... + 114593702.

It is an arithmetic number, because the mean of its divisors is an integer number (687562152).

Almost surely, 2^2521061213 is an apocalyptic number.

It is an amenable number.

2521061213 is a deficient number, since it is larger than the sum of its proper divisors (229187395).

2521061213 is a wasteful number, since it uses less digits than its factorization.

2521061213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229187394.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2521061213 is about 50210.1704139709. The cubic root of 2521061213 is about 1361.0094173090.

Adding to 2521061213 its reverse (3121601252), we get a palindrome (5642662465).

The spelling of 2521061213 in words is "two billion, five hundred twenty-one million, sixty-one thousand, two hundred thirteen".