1226085818215 has 16 divisors (see below), whose sum is σ = 1478634393600. Its totient is φ = 975987578272.

The previous prime is 1226085818189. The next prime is 1226085818227. The reversal of 1226085818215 is 5128185806221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1226085818215 - 2⁵ = 1226085818183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097034 + ... + 1911976.

It is an arithmetic number, because the mean of its divisors is an integer number (92414649600).

Almost surely, 2^{1226085818215} is an apocalyptic number.

1226085818215 is a deficient number, since it is larger than the sum of its proper divisors (252548575385).

1226085818215 is a wasteful number, since it uses less digits than its factorization.

1226085818215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816446.

The product of its (nonzero) digits is 614400, while the sum is 49.

The spelling of 1226085818215 in words is "one trillion, two hundred twenty-six billion, eighty-five million, eight hundred eighteen thousand, two hundred fifteen".