1011100505505 has 16 divisors (see below), whose sum is σ = 1618793240064. Its totient is φ = 538909459200.

The previous prime is 1011100505479. The next prime is 1011100505551. The reversal of 1011100505505 is 5055050011101.

1011100505505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011100505505 - 2⁷ = 1011100505377 is a prime.

It is a Curzon 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, 21484696 + ... + 21531705.

It is an arithmetic number, because the mean of its divisors is an integer number (101174577504).

Almost surely, 2^{1011100505505} is an apocalyptic number.

1011100505505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011100505505 is a deficient number, since it is larger than the sum of its proper divisors (607692734559).

1011100505505 is a wasteful number, since it uses less digits than its factorization.

1011100505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43017976.

The product of its (nonzero) digits is 625, while the sum is 24.

Adding to 1011100505505 its reverse (5055050011101), we get a palindrome (6066150516606).

The spelling of 1011100505505 in words is "one trillion, eleven billion, one hundred million, five hundred five thousand, five hundred five".