1222251215 has 8 divisors (see below), whose sum is σ = 1497908160. Its totient is φ = 956996512.

The previous prime is 1222251161. The next prime is 1222251241. The reversal of 1222251215 is 5121522221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222251215 - 2¹² = 1222247119 is a prime.

It is a congruent 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, 2600300 + ... + 2600769.

It is an arithmetic number, because the mean of its divisors is an integer number (187238520).

Almost surely, 2^1222251215 is an apocalyptic number.

1222251215 is a deficient number, since it is larger than the sum of its proper divisors (275656945).

1222251215 is an equidigital number, since it uses as much as digits as its factorization.

1222251215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201121.

The product of its digits is 800, while the sum is 23.

The square root of 1222251215 is about 34960.7095894806. The cubic root of 1222251215 is about 1069.1865640527.

Adding to 1222251215 its reverse (5121522221), we get a palindrome (6343773436).

The spelling of 1222251215 in words is "one billion, two hundred twenty-two million, two hundred fifty-one thousand, two hundred fifteen".