1225320213 has 8 divisors (see below), whose sum is σ = 1759434208. Its totient is φ = 754043184.

The previous prime is 1225320181. The next prime is 1225320223. The reversal of 1225320213 is 3120235221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225320213 - 2⁵ = 1225320181 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 1225320213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225320223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15709195 + ... + 15709272.

It is an arithmetic number, because the mean of its divisors is an integer number (219929276).

Almost surely, 2^1225320213 is an apocalyptic number.

1225320213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1225320213 is a deficient number, since it is larger than the sum of its proper divisors (534113995).

1225320213 is a wasteful number, since it uses less digits than its factorization.

1225320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31418483.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1225320213 is about 35004.5741725278. The cubic root of 1225320213 is about 1070.0807034363.

Adding to 1225320213 its reverse (3120235221), we get a palindrome (4345555434).

The spelling of 1225320213 in words is "one billion, two hundred twenty-five million, three hundred twenty thousand, two hundred thirteen".