1100550100 has 36 divisors (see below), whose sum is σ = 2571903964. Its totient is φ = 406356480.

The previous prime is 1100550079. The next prime is 1100550109. The reversal of 1100550100 is 10550011.

It can be written as a sum of positive squares in 6 ways, for example, as 384238404 + 716311696 = 19602^2 + 26764^2 .

It is a super-2 number, since 2×1100550100² = 2422421045220020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100550109) 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, 421989 + ... + 424588.

Almost surely, 2^1100550100 is an apocalyptic number.

1100550100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100550100 is an abundant number, since it is smaller than the sum of its proper divisors (1471353864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100550100 is a wasteful number, since it uses less digits than its factorization.

1100550100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846604 (or 846597 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 1100550100 is about 33174.5399365236. The cubic root of 1100550100 is about 1032.4521647466.

The spelling of 1100550100 in words is "one billion, one hundred million, five hundred fifty thousand, one hundred".