1220022515 has 8 divisors (see below), whose sum is σ = 1511253888. Its totient is φ = 944533440.

The previous prime is 1220022491. The next prime is 1220022523. The reversal of 1220022515 is 5152200221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220022515 - 2⁸ = 1220022259 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3935402 + ... + 3935711.

It is an arithmetic number, because the mean of its divisors is an integer number (188906736).

Almost surely, 2^1220022515 is an apocalyptic number.

1220022515 is a deficient number, since it is larger than the sum of its proper divisors (291231373).

1220022515 is an equidigital number, since it uses as much as digits as its factorization.

1220022515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871149.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1220022515 is about 34928.8206929464. The cubic root of 1220022515 is about 1068.5363033180.

Adding to 1220022515 its reverse (5152200221), we get a palindrome (6372222736).

The spelling of 1220022515 in words is "one billion, two hundred twenty million, twenty-two thousand, five hundred fifteen".