1226120255 has 48 divisors (see below), whose sum is σ = 1613001600. Its totient is φ = 894081024.

The previous prime is 1226120219. The next prime is 1226120263. The reversal of 1226120255 is 5520216221.

It is a Cunningham number, because it is equal to 35016²-1.

It is not a de Polignac number, because 1226120255 - 2¹⁰ = 1226119231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8228921 + ... + 8229069.

It is an arithmetic number, because the mean of its divisors is an integer number (33604200).

Almost surely, 2^1226120255 is an apocalyptic number.

1226120255 is a deficient number, since it is larger than the sum of its proper divisors (386881345).

1226120255 is a wasteful number, since it uses less digits than its factorization.

1226120255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1226120255 is about 35015.9999857208. Note that the first 4 decimals coincide. The cubic root of 1226120255 is about 1070.3135468567.

Adding to 1226120255 its reverse (5520216221), we get a palindrome (6746336476).

The spelling of 1226120255 in words is "one billion, two hundred twenty-six million, one hundred twenty thousand, two hundred fifty-five".