1213301225 has 24 divisors (see below), whose sum is σ = 1548245400. Its totient is φ = 942520320.

The previous prime is 1213301213. The next prime is 1213301239. The reversal of 1213301225 is 5221033121.

It can be written as a sum of positive squares in 12 ways, for example, as 63616576 + 1149684649 = 7976^2 + 33907^2 .

It is not a de Polignac number, because 1213301225 - 2⁸ = 1213300969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213301197 and 1213301206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621551 + ... + 623499.

It is an arithmetic number, because the mean of its divisors is an integer number (64510225).

Almost surely, 2^1213301225 is an apocalyptic number.

It is an amenable number.

1213301225 is a deficient number, since it is larger than the sum of its proper divisors (334944175).

1213301225 is a wasteful number, since it uses less digits than its factorization.

1213301225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669 (or 2664 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1213301225 is about 34832.4737134760. The cubic root of 1213301225 is about 1066.5704456933.

Adding to 1213301225 its reverse (5221033121), we get a palindrome (6434334346).

The spelling of 1213301225 in words is "one billion, two hundred thirteen million, three hundred one thousand, two hundred twenty-five".