1225216327 has 4 divisors (see below), whose sum is σ = 1225346400. Its totient is φ = 1225086256.

The previous prime is 1225216309. The next prime is 1225216393. The reversal of 1225216327 is 7236125221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225216327 - 2¹¹ = 1225214279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225219327) 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 3 ways as a sum of consecutive naturals, for example, 49702 + ... + 70147.

It is an arithmetic number, because the mean of its divisors is an integer number (306336600).

Almost surely, 2^1225216327 is an apocalyptic number.

1225216327 is a deficient number, since it is larger than the sum of its proper divisors (130073).

1225216327 is a wasteful number, since it uses less digits than its factorization.

1225216327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130072.

The product of its digits is 10080, while the sum is 31.

The square root of 1225216327 is about 35003.0902492908. The cubic root of 1225216327 is about 1070.0504611250.

The spelling of 1225216327 in words is "one billion, two hundred twenty-five million, two hundred sixteen thousand, three hundred twenty-seven".