1220300215 has 4 divisors (see below), whose sum is σ = 1464360264. Its totient is φ = 976240168.

The previous prime is 1220300197. The next prime is 1220300227. The reversal of 1220300215 is 5120030221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220300215 is a prime.

It is a super-2 number, since 2×1220300215² = 2978265229458092450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122030017 + ... + 122030026.

It is an arithmetic number, because the mean of its divisors is an integer number (366090066).

Almost surely, 2^1220300215 is an apocalyptic number.

1220300215 is a deficient number, since it is larger than the sum of its proper divisors (244060049).

1220300215 is an equidigital number, since it uses as much as digits as its factorization.

1220300215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244060048.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1220300215 is about 34932.7956940180. The cubic root of 1220300215 is about 1068.6173701334.

Adding to 1220300215 its reverse (5120030221), we get a palindrome (6340330436).

The spelling of 1220300215 in words is "one billion, two hundred twenty million, three hundred thousand, two hundred fifteen".