1221414115 has 4 divisors (see below), whose sum is σ = 1465696944. Its totient is φ = 977131288.

The previous prime is 1221414101. The next prime is 1221414143. The reversal of 1221414115 is 5114141221.

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 1221414115 - 2¹¹ = 1221412067 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, 122141407 + ... + 122141416.

It is an arithmetic number, because the mean of its divisors is an integer number (366424236).

Almost surely, 2^1221414115 is an apocalyptic number.

1221414115 is a deficient number, since it is larger than the sum of its proper divisors (244282829).

1221414115 is an equidigital number, since it uses as much as digits as its factorization.

1221414115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244282828.

The product of its digits is 320, while the sum is 22.

The square root of 1221414115 is about 34948.7355279129. The cubic root of 1221414115 is about 1068.9424188047.

Adding to 1221414115 its reverse (5114141221), we get a palindrome (6335555336).

The spelling of 1221414115 in words is "one billion, two hundred twenty-one million, four hundred fourteen thousand, one hundred fifteen".