1100020055 has 4 divisors (see below), whose sum is σ = 1320024072. Its totient is φ = 880016040.

The previous prime is 1100020039. The next prime is 1100020063. The reversal of 1100020055 is 5500200011.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1100020055 - 2⁴ = 1100020039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110002001 + ... + 110002010.

It is an arithmetic number, because the mean of its divisors is an integer number (330006018).

Almost surely, 2^1100020055 is an apocalyptic number.

1100020055 is a deficient number, since it is larger than the sum of its proper divisors (220004017).

1100020055 is an equidigital number, since it uses as much as digits as its factorization.

1100020055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220004016.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 1100020055 is about 33166.5502426767. The cubic root of 1100020055 is about 1032.2863888660.

Adding to 1100020055 its reverse (5500200011), we get a palindrome (6600220066).

The spelling of 1100020055 in words is "one billion, one hundred million, twenty thousand, fifty-five".