1223215215 has 16 divisors (see below), whose sum is σ = 2024632800. Its totient is φ = 629885312.

The previous prime is 1223215177. The next prime is 1223215237. The reversal of 1223215215 is 5125123221.

It is a cyclic number.

It is not a de Polignac number, because 1223215215 - 2⁸ = 1223214959 is a prime.

It is a congruent number.

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, 1405560 + ... + 1406429.

It is an arithmetic number, because the mean of its divisors is an integer number (126539550).

Almost surely, 2^1223215215 is an apocalyptic number.

1223215215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223215215 is a deficient number, since it is larger than the sum of its proper divisors (801417585).

1223215215 is a wasteful number, since it uses less digits than its factorization.

1223215215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812026.

The product of its digits is 1200, while the sum is 24.

The square root of 1223215215 is about 34974.4937776088. The cubic root of 1223215215 is about 1069.4675823848.

Adding to 1223215215 its reverse (5125123221), we get a palindrome (6348338436).

The spelling of 1223215215 in words is "one billion, two hundred twenty-three million, two hundred fifteen thousand, two hundred fifteen".