1221614315 has 8 divisors (see below), whose sum is σ = 1466215008. Its totient is φ = 977106240.

The previous prime is 1221614309. The next prime is 1221614327. The reversal of 1221614315 is 5134161221.

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

It is not a de Polignac number, because 1221614315 - 2⁸ = 1221614059 is a prime.

It is a super-2 number, since 2×1221614315² = 2984683069225838450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10250 + ... + 50480.

It is an arithmetic number, because the mean of its divisors is an integer number (183276876).

Almost surely, 2^1221614315 is an apocalyptic number.

1221614315 is a deficient number, since it is larger than the sum of its proper divisors (244600693).

1221614315 is an equidigital number, since it uses as much as digits as its factorization.

1221614315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46309.

The product of its digits is 1440, while the sum is 26.

The square root of 1221614315 is about 34951.5996057405. The cubic root of 1221614315 is about 1069.0008184849. Note that the first 3 decimals are identical.

Adding to 1221614315 its reverse (5134161221), we get a palindrome (6355775536).

The spelling of 1221614315 in words is "one billion, two hundred twenty-one million, six hundred fourteen thousand, three hundred fifteen".