1100212100 has 72 divisors (see below), whose sum is σ = 2706493440. Its totient is φ = 384842880.

The previous prime is 1100212097. The next prime is 1100212129. The reversal of 1100212100 is 12120011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2429 + ... + 46971.

Almost surely, 2^1100212100 is an apocalyptic number.

1100212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100212100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353246720).

1100212100 is an abundant number, since it is smaller than the sum of its proper divisors (1606281340).

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

1100212100 is a wasteful number, since it uses less digits than its factorization.

1100212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44589 (or 44582 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1100212100 is about 33169.4452772427. The cubic root of 1100212100 is about 1032.3464586508.

Adding to 1100212100 its reverse (12120011), we get a palindrome (1112332111).

The spelling of 1100212100 in words is "one billion, one hundred million, two hundred twelve thousand, one hundred".