2211012521 has 2 divisors, whose sum is σ = 2211012522. Its totient is φ = 2211012520.

The previous prime is 2211012481. The next prime is 2211012541. The reversal of 2211012521 is 1252101122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1983455296 + 227557225 = 44536^2 + 15085^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211012521 - 2⁶ = 2211012457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211012521.

It is not a weakly prime, because it can be changed into another prime (2211012541) 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 as a sum of consecutive naturals, namely, 1105506260 + 1105506261.

It is an arithmetic number, because the mean of its divisors is an integer number (1105506261).

Almost surely, 2^2211012521 is an apocalyptic number.

It is an amenable number.

2211012521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211012521 is an equidigital number, since it uses as much as digits as its factorization.

2211012521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2211012521 is about 47021.4049237153. The cubic root of 2211012521 is about 1302.7579556954.

Adding to 2211012521 its reverse (1252101122), we get a palindrome (3463113643).

The spelling of 2211012521 in words is "two billion, two hundred eleven million, twelve thousand, five hundred twenty-one".