1100021130 has 48 divisors (see below), whose sum is σ = 3080062440. Its totient is φ = 270774144.

The previous prime is 1100021129. The next prime is 1100021149. The reversal of 1100021130 is 311200011.

It can be written as a sum of positive squares in 4 ways, for example, as 481056489 + 618964641 = 21933^2 + 24879^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

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, 468925 + ... + 471264.

Almost surely, 2^1100021130 is an apocalyptic number.

1100021130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1100021130 is an abundant number, since it is smaller than the sum of its proper divisors (1980041310).

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

1100021130 is a wasteful number, since it uses less digits than its factorization.

1100021130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940215 (or 940212 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1100021130 is about 33166.5664487598. The cubic root of 1100021130 is about 1032.2867251349.

Adding to 1100021130 its reverse (311200011), we get a palindrome (1411221141).

The spelling of 1100021130 in words is "one billion, one hundred million, twenty-one thousand, one hundred thirty".