1220302215 has 48 divisors (see below), whose sum is σ = 2311335936. Its totient is φ = 590673600.

The previous prime is 1220302207. The next prime is 1220302231. The reversal of 1220302215 is 5122030221.

It is not a de Polignac number, because 1220302215 - 2³ = 1220302207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 358170 + ... + 361560.

It is an arithmetic number, because the mean of its divisors is an integer number (48152832).

Almost surely, 2^1220302215 is an apocalyptic number.

1220302215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220302215 is a deficient number, since it is larger than the sum of its proper divisors (1091033721).

1220302215 is a wasteful number, since it uses less digits than its factorization.

1220302215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140 (or 4137 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1220302215 is about 34932.8243204010. The cubic root of 1220302215 is about 1068.6179539334.

Adding to 1220302215 its reverse (5122030221), we get a palindrome (6342332436).

The spelling of 1220302215 in words is "one billion, two hundred twenty million, three hundred two thousand, two hundred fifteen".