1213225315 has 16 divisors (see below), whose sum is σ = 1549601280. Its totient is φ = 908692480.

The previous prime is 1213225303. The next prime is 1213225327. The reversal of 1213225315 is 5135223121.

It is an interprime number because it is at equal distance from previous prime (1213225303) and next prime (1213225327).

It is not a de Polignac number, because 1213225315 - 2¹³ = 1213217123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213225315.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21130 + ... + 53599.

It is an arithmetic number, because the mean of its divisors is an integer number (96850080).

Almost surely, 2^1213225315 is an apocalyptic number.

1213225315 is a deficient number, since it is larger than the sum of its proper divisors (336375965).

1213225315 is a wasteful number, since it uses less digits than its factorization.

1213225315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74942.

The product of its digits is 1800, while the sum is 25.

The square root of 1213225315 is about 34831.3840523170. The cubic root of 1213225315 is about 1066.5482019587.

Adding to 1213225315 its reverse (5135223121), we get a palindrome (6348448436).

The spelling of 1213225315 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, three hundred fifteen".