1101002100 has 144 divisors (see below), whose sum is σ = 3556439040. Its totient is φ = 260668800.

The previous prime is 1101002099. The next prime is 1101002131. The reversal of 1101002100 is 12001011.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138021 + ... + 145779.

Almost surely, 2^1101002100 is an apocalyptic number.

1101002100 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 1101002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778219520).

1101002100 is an abundant number, since it is smaller than the sum of its proper divisors (2455436940).

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

1101002100 is a wasteful number, since it uses less digits than its factorization.

1101002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7830 (or 7823 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1101002100 is about 33181.3516903697. The cubic root of 1101002100 is about 1032.5934893761.

Adding to 1101002100 its reverse (12001011), we get a palindrome (1113003111).

The spelling of 1101002100 in words is "one billion, one hundred one million, two thousand, one hundred".