1126220011555 has 8 divisors (see below), whose sum is σ = 1356342946992. Its totient is φ = 897723387168.

The previous prime is 1126220011421. The next prime is 1126220011559. The reversal of 1126220011555 is 5551100226211.

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 1126220011555 - 2¹⁷ = 1126219880483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1126220011559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406576237 + ... + 406579006.

It is an arithmetic number, because the mean of its divisors is an integer number (169542868374).

Almost surely, 2^{1126220011555} is an apocalyptic number.

1126220011555 is a deficient number, since it is larger than the sum of its proper divisors (230122935437).

1126220011555 is an equidigital number, since it uses as much as digits as its factorization.

1126220011555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813155525.

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 1126220011555 its reverse (5551100226211), we get a palindrome (6677320237766).

The spelling of 1126220011555 in words is "one trillion, one hundred twenty-six billion, two hundred twenty million, eleven thousand, five hundred fifty-five".