1100215245555 has 12 divisors (see below), whose sum is σ = 1907039759040. Its totient is φ = 586781464272.

The previous prime is 1100215245551. The next prime is 1100215245559. The reversal of 1100215245555 is 5555425120011.

1100215245555 is a `hidden beast` number, since 1 + 1 + 0 + 0 + 2 + 152 + 455 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (1100215245551) and next prime (1100215245559).

It is not a de Polignac number, because 1100215245555 - 2² = 1100215245551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1100215245551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12224613795 + ... + 12224613884.

It is an arithmetic number, because the mean of its divisors is an integer number (158919979920).

Almost surely, 2^{1100215245555} is an apocalyptic number.

1100215245555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1100215245555 is a deficient number, since it is larger than the sum of its proper divisors (806824513485).

1100215245555 is a wasteful number, since it uses less digits than its factorization.

1100215245555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24449227690 (or 24449227687 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 1100215245555 in words is "one trillion, one hundred billion, two hundred fifteen million, two hundred forty-five thousand, five hundred fifty-five".