1220130515 has 4 divisors (see below), whose sum is σ = 1464156624. Its totient is φ = 976104408.

The previous prime is 1220130487. The next prime is 1220130539. The reversal of 1220130515 is 5150310221.

It is a happy number.

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 1220130515 - 2⁸ = 1220130259 is a prime.

It is a Duffinian 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, 122013047 + ... + 122013056.

It is an arithmetic number, because the mean of its divisors is an integer number (366039156).

Almost surely, 2^1220130515 is an apocalyptic number.

1220130515 is a deficient number, since it is larger than the sum of its proper divisors (244026109).

1220130515 is an equidigital number, since it uses as much as digits as its factorization.

1220130515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244026108.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1220130515 is about 34930.3666599708. The cubic root of 1220130515 is about 1068.5678323852.

Adding to 1220130515 its reverse (5150310221), we get a palindrome (6370440736).

The spelling of 1220130515 in words is "one billion, two hundred twenty million, one hundred thirty thousand, five hundred fifteen".