2522521121 has 2 divisors, whose sum is σ = 2522521122. Its totient is φ = 2522521120.

The previous prime is 2522521109. The next prime is 2522521171. The reversal of 2522521121 is 1211252252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2496101521 + 26419600 = 49961^2 + 5140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2522521121 is a prime.

It is a super-2 number, since 2×2522521121² = 12726225611782193282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2522521171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261260560 + 1261260561.

It is an arithmetic number, because the mean of its divisors is an integer number (1261260561).

Almost surely, 2^2522521121 is an apocalyptic number.

It is an amenable number.

2522521121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2522521121 is an equidigital number, since it uses as much as digits as its factorization.

2522521121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 23.

The square root of 2522521121 is about 50224.7062808734. The cubic root of 2522521121 is about 1361.2720798619.

Adding to 2522521121 its reverse (1211252252), we get a palindrome (3733773373).

The spelling of 2522521121 in words is "two billion, five hundred twenty-two million, five hundred twenty-one thousand, one hundred twenty-one".