2221235252 has 12 divisors (see below), whose sum is σ = 3915536100. Its totient is φ = 1102510656.

The previous prime is 2221235239. The next prime is 2221235287. The reversal of 2221235252 is 2525321222.

It can be written as a sum of positive squares in 2 ways, for example, as 1094021776 + 1127213476 = 33076^2 + 33574^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026127 + ... + 2027222.

It is an arithmetic number, because the mean of its divisors is an integer number (326294675).

Almost surely, 2^2221235252 is an apocalyptic number.

It is an amenable number.

2221235252 is a deficient number, since it is larger than the sum of its proper divisors (1694300848).

2221235252 is a wasteful number, since it uses less digits than its factorization.

2221235252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053490 (or 4053488 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 2221235252 is about 47129.9825164406. The cubic root of 2221235252 is about 1304.7626588919.

Adding to 2221235252 its reverse (2525321222), we get a palindrome (4746556474).

The spelling of 2221235252 in words is "two billion, two hundred twenty-one million, two hundred thirty-five thousand, two hundred fifty-two".