1226151215 has 8 divisors (see below), whose sum is σ = 1518845568. Its totient is φ = 949278240.

The previous prime is 1226151209. The next prime is 1226151221. The reversal of 1226151215 is 5121516221.

It is an interprime number because it is at equal distance from previous prime (1226151209) and next prime (1226151221).

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

It is not a de Polignac number, because 1226151215 - 2¹² = 1226147119 is a prime.

It is a Duffinian number.

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, 3955172 + ... + 3955481.

It is an arithmetic number, because the mean of its divisors is an integer number (189855696).

Almost surely, 2^1226151215 is an apocalyptic number.

1226151215 is a deficient number, since it is larger than the sum of its proper divisors (292694353).

1226151215 is an equidigital number, since it uses as much as digits as its factorization.

1226151215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7910689.

The product of its digits is 1200, while the sum is 26.

The square root of 1226151215 is about 35016.4420665493. The cubic root of 1226151215 is about 1070.3225553882.

Adding to 1226151215 its reverse (5121516221), we get a palindrome (6347667436).

The spelling of 1226151215 in words is "one billion, two hundred twenty-six million, one hundred fifty-one thousand, two hundred fifteen".