1220020315 has 4 divisors (see below), whose sum is σ = 1464024384. Its totient is φ = 976016248.

The previous prime is 1220020301. The next prime is 1220020327. The reversal of 1220020315 is 5130200221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5130200221 = 2381 ⋅2154641.

It is a cyclic number.

It is not a de Polignac number, because 1220020315 - 2²⁷ = 1085802587 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122002027 + ... + 122002036.

It is an arithmetic number, because the mean of its divisors is an integer number (366006096).

Almost surely, 2^1220020315 is an apocalyptic number.

1220020315 is a deficient number, since it is larger than the sum of its proper divisors (244004069).

1220020315 is an equidigital number, since it uses as much as digits as its factorization.

1220020315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244004068.

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

The square root of 1220020315 is about 34928.7892003144. The cubic root of 1220020315 is about 1068.5356610399.

Adding to 1220020315 its reverse (5130200221), we get a palindrome (6350220536).

The spelling of 1220020315 in words is "one billion, two hundred twenty million, twenty thousand, three hundred fifteen".