1233221225 has 36 divisors (see below), whose sum is σ = 1651870836. Its totient is φ = 910141440.

The previous prime is 1233221219. The next prime is 1233221251. The reversal of 1233221225 is 5221223321.

It can be written as a sum of positive squares in 18 ways, for example, as 76405081 + 1156816144 = 8741^2 + 34012^2 .

It is not a de Polignac number, because 1233221225 - 2²⁰ = 1232172649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233221225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1193309 + ... + 1194341.

It is an arithmetic number, because the mean of its divisors is an integer number (45885301).

Almost surely, 2^1233221225 is an apocalyptic number.

It is an amenable number.

1233221225 is a deficient number, since it is larger than the sum of its proper divisors (418649611).

1233221225 is a wasteful number, since it uses less digits than its factorization.

1233221225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1108 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 1233221225 is about 35117.2496787547. The cubic root of 1233221225 is about 1072.3757804994.

Adding to 1233221225 its reverse (5221223321), we get a palindrome (6454444546).

The spelling of 1233221225 in words is "one billion, two hundred thirty-three million, two hundred twenty-one thousand, two hundred twenty-five".