2222351132521 has 4 divisors (see below), whose sum is σ = 2393301219652. Its totient is φ = 2051401045392.

The previous prime is 2222351132513. The next prime is 2222351132557. The reversal of 2222351132521 is 1252311532222.

2222351132521 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.

It can be written as a sum of positive squares in 2 ways, for example, as 147771816921 + 2074579315600 = 384411^2 + 1440340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222351132521 - 2³ = 2222351132513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222351132021) 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, 85475043546 + ... + 85475043571.

It is an arithmetic number, because the mean of its divisors is an integer number (598325304913).

Almost surely, 2^{2222351132521} is an apocalyptic number.

It is an amenable number.

2222351132521 is a deficient number, since it is larger than the sum of its proper divisors (170950087131).

2222351132521 is a wasteful number, since it uses less digits than its factorization.

2222351132521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170950087130.

The product of its digits is 14400, while the sum is 31.

Adding to 2222351132521 its reverse (1252311532222), we get a palindrome (3474662664743).

The spelling of 2222351132521 in words is "two trillion, two hundred twenty-two billion, three hundred fifty-one million, one hundred thirty-two thousand, five hundred twenty-one".