1101020100 has 72 divisors (see below), whose sum is σ = 3271748928. Its totient is φ = 285667200.

The previous prime is 1101020071. The next prime is 1101020111. The reversal of 1101020100 is 10201011.

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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38496 + ... + 60695.

Almost surely, 2^1101020100 is an apocalyptic number.

1101020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101020100 is an abundant number, since it is smaller than the sum of its proper divisors (2170728828).

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

1101020100 is a wasteful number, since it uses less digits than its factorization.

1101020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99245 (or 99238 counting only the distinct ones).

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

The square root of 1101020100 is about 33181.6229259510. The cubic root of 1101020100 is about 1032.5991165472.

Adding to 1101020100 its reverse (10201011), we get a palindrome (1111221111).

It can be divided in two parts, 1 and 101020100, that added together give a palindrome (101020101).

The spelling of 1101020100 in words is "one billion, one hundred one million, twenty thousand, one hundred".