2521131113 has 2 divisors, whose sum is σ = 2521131114. Its totient is φ = 2521131112.

The previous prime is 2521131073. The next prime is 2521131149. The reversal of 2521131113 is 3111311252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1302632464 + 1218498649 = 36092^2 + 34907^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521131113 - 2¹⁰ = 2521130089 is a prime.

It is a super-2 number, since 2×2521131113² = 12712204177873237538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2521131313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260565556 + 1260565557.

It is an arithmetic number, because the mean of its divisors is an integer number (1260565557).

Almost surely, 2^2521131113 is an apocalyptic number.

It is an amenable number.

2521131113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521131113 is an equidigital number, since it uses as much as digits as its factorization.

2521131113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 20.

The square root of 2521131113 is about 50210.8664832624. The cubic root of 2521131113 is about 1361.0219958320.

Adding to 2521131113 its reverse (3111311252), we get a palindrome (5632442365).

The spelling of 2521131113 in words is "two billion, five hundred twenty-one million, one hundred thirty-one thousand, one hundred thirteen".